bad t con board symptoms

Worried about getting Bad T Con Board Symptoms? This is a detailed research on tht t con board function. If your preference is t con board repair cost, then this article is perfect for you.

DIAGNOSING A FAILED T’CON BOARD… All video inputs received by the video process circuits are handled on a frame-by-frame basis.  The video frames are converted and scaled to 8 to 10 bit RGB information.  It is virtually impossible for the video process circuit to cause a problem on a specific area of the screen.  Failures on this board usually appear as distortions, color level shifts, video level shifts or noise that involves the entire picture.  The T’Con can generate symptoms that appear to be video process related, but the video process circuit cannot produce the symptoms of a failed T’Con board circuit.

t con board function

Bad T Con Board Symptoms

T’Con boards
Sony T’Con board

Samsung T’Con board

   Failures in the timing control circuits of the T’Con can produce symptoms of absolutely no video or generate lines and patterns that usually cover all or a substantial part of the screen.  Determining if the T’Con is the cause of a ‘No Video’ condition is a bit more difficult since there are no indications on the screen to analyze. Many of the Sony TV models ove the last few years will detect a T’Con that has completely failed.  The communications data between the video process circuits and the T;Con will cease to communicate, iif the T’Con fails completely.  This will cause the TV to shut down and display a diagnostic code, indicating a failure of the T’Con.  Not all chassis designs have this feature and it is not found on older models.  The typical scenario when this failure arises is for the technician to bring a video process board to the repair location.  It is usually safe to assume that the problem lies on the T’Con board, if the replacement video board dos not give a solution to the problem since it is highly unlikely that a replacement board with the same failure was received.  One trick to check most T’Cons for functionality is to loosen the LVDS connector at the T’Con while unit is turned ON.  Handle the LVDS connector with care and be certain to fully release the lock tabs.  Gently rock the cable in and out of the connector while observing the screen for any response.  Depending on the chassis, the symptoms of the screen ma be gentle white flashes, intermittent coloured lines, or a screen full of random patterns.  The idea at this point is to provoke some kind of response on the screen.  Another helpful procedure is to rapidly heat and/cool the T’Con with a hot air devices or circuit coolant and watch for patterns appear on the screen.×280&!9&btvi=3&fsb=1&xpc=uWc6ocMtvX&p=https%3A//

LVDS cable failuresAlthough the problem with LVDS cable or connectors can generate symptoms of T’Con failures this usually tends to be intermittent and wiggling of the connectors will usually provoke  a change in the symptom on the screen.  LVDS cable and connectors have became rather robust over the past few years.  Technicians who damage them cause most problems and this is generally quite oblivious upon close examination.LVDS CABLE

LCD panel failuresSome LCD panel failures could possibly mistaken for T’Con board issues.  Other than damage to the LCD glass, most panel failures are isolated to a particular area of the screen.  Since the T’Con disperses the pixel data to groups of line and column dirve IC’s situated on the outer edges of the panel, it is unlikely that more than one of these IC’s would fail at the same time.  Multiple columns of struck on or stuck off pixels are therefore, more likely to be the fault of the T’Con circuits.  The same applies to a single row of lit or unlit pixels.  The T’Con simply cannot cut out a single line of information.

   In many instances, replacement of the T’Con board will be relatively straight forward.  In some case, the other boards may have to be loosened or removed to allow access to the mounting screws and clearance to remove the T’Con board.  The issue of most concern is keeping track of the heat transfer pads, stand offs and insulators.  The T’Con is heavily shielded and it si ease to have one or more of these components accidentally fall out of the assembly when removing.  T’Con assemblies that use multiple heat transfer pads must be removed slowly and every attempt must be made to keep the shield and circuit board together as they are removed from the unit.  Check for any service bulletins pertaining to the model and panel design that contain the subject lie of ‘T’Con heat transfer pad locations’ for pictures to show the proper location of these components.  This site itself has covered disassembly procedure to some model LCD TVs, here.  Pull up older posts here, or see the site in Timeslide option, which can be accessed by the drop down  at the top left side of the display window.  It will make search the easily.Remove the screw from the LVDS cable ground strap so the cable can be moved away.  Unplug the connector to inverter board and remove harness from the retainer.  Remove all screws securing the board sub-chassis to the panel.  Pull the top of the board toward you and downward to allow access to the bottom screws securing T’Con.  The position of screws, and disassembly method may vary set to set.   Carefully unpeel the conductive tape from the top bracket taking care not to tear them. 

Leave the tape attacked to the T’Con shield.  Remove the top bracket covering the gate and source driver components.  This will allow access to the upper flat cable connectors, if any.  Carefully lift the locking tabs securing the flat cables.  Leave the fat cables attached to the T’Con and shield ass;y.  the T’Con board will have an insulating pad between it and the LCD panel that will cause the board to stick.  Not much effort is required to release it.  The goal at this point is to remove the board and shield together so as to avoid dropping heat transfer pads and insulators located between the front of the board and the shield.  If successful, Both components should stay together as insulated.  Note the spaces mounted on the backside of the board.  These will need to be transferred to the replacement board.  Lift the circuit board upward slowly while observing the location of the heat transfer and insulating pads.  In most cases the heat transfer pad will remain attached to their appropriate ICs and the insulating pads will be struck to the shield.  If anything falls off, use the instruction to return them to their proper position.  Transfer all heat and insulating pads along with the flat cables to the replacement board.  Once the components have been transferred to the front of the circuit board, attach the shield and flip the assembly.  Transfer any spacers or insulating pads to the replacement bard.  Temporarily secure the T’Con board to the shield with electrical tape.  This helps in preventing movements of the circuit bard while installing the assembly back into the LCD panel.  Once the T’Con ass’y is secured to the panel, insert and lock the flat cables.  Plug in all connectors and secure the board sub chassis.  Do not forget about the wire harness that was removed from its retainer.

t con board repair cost



The very first thing to consider is the TV size that you deem will be optimal for your setup. Try to figure out if this is going to be a TV the family gathers around to watch daily TV series on or if it’s going to be something for your personal use, to game or to stream your shows. 

Consider where you will be placing your TV. Then, depending on your budget and space you have available, you can go about finalising a size. Usually, for a medium-sized bedroom, 43-inches tends to be the sweet spot (adjust this if you’re room is smaller than usual or if your sofa set or bed is closer to the TV). For the living room, however, 55-inches to 65 inches is ideal. If your budget doesn’t allow it, simply move your sofa set closer and buy a smaller sized screen. A good rule of thumb is to sit at a distance three times the height of the TV screen for HD TVs and 1.5 times the screen height for 4K UHD TVs. This is because 4K TVs are visually less grainy than HD TVs at a closer distance. 


TV resolution is one of the most integral decisions you need to make when you’re scouring the market for a TV. While the first wave of 8K TVs have just breached the market, an example being the Samsung Q900 8K TV, 4K TVs are still the sweet spot with no shortage of options in the market. Full HD (1920×1080) TVs were the industry standard for a while, however, most manufacturers are now throwing all of their resources into 4K models. They’re also becoming less costly, and you can get a pretty capable set for about Rs. 50,000. These have four times the pixels as FHD TVs and are significantly better in quality. 

However, if you do want to save your dough, Full HD TVs are also quite decent for their price, and most untrained eyes won’t even be able to tell the difference unless you sit considerably close to the TV. Although, the increasing amount of content that is being created for 4K, on Netflix, Amazon Prime and even YouTube, possibly warrants hiking up your budget a bit to have an overall better viewing experience. Additionally, most 4K TVs are also HDR compatible, which means you will get those darker blacks and vivid colours which definitely enriches the film-watching experience. 


Popular types of display types in TVs include LCD/LED and OLED. Most of the televisions today are LCD LED sets. Essentially, these screens used LEDs to illuminate the LCD panel, hence the name. When buying an LCD LED TV, you must consider how the panel is lit. Some use edge-lit panels where LEDs are placed only on the edge of the screen.

On the other hand, you have full-array LED sets which have LEDs placed directly behind the screen and can light up or darken specific zones to represent light and dark areas in any scene. This is called active dimming or local dimming. This technology allows the backlight to be more precise and produces an overall better quality image chock full of detail. This feature was once only found on high- end and premium models but is now trickling down to the conservatively priced sets as well. Another LCD technology found in these sets is quantum dots which adds an additional layer of nanocrystal dots that allow for pictures with more colour and brightness. 

Now for the more exorbitant stuff – OLED TVs. These TVs replace the backlight found in LCD TVs with a layer of organic LEDs which can achieve true blacks (darkest blacks) and incredible levels of contrast. Manufacturers such as LG, Sony, Philips and others have some commendable OLED offerings. OLED panels are found exclusively in 4K sets and are much pricier than LCD LED TVs, however, the price is dwindling, especially with the introduction of 8K panels. Do note that OLED panels, while having the best-in-class contrast and deeper blacks, do not get as bright as LCD sets. They’re also notorious for ‘ghost’ images or burn-ins which happen due to displaying a static image for an extended period of time. QLED technology, usually seen in Samsung TVs, feature the quantum dot technology mentioned above. While these still look vibrant, they are not to be confused with OLED TVs. 


Refresh rate (represented in Hertz or Hz) tells you the number of times a picture is refreshed on the screen per second. The standard refresh rate is 60 Hz, however, 120 Hz TVs are also becoming common now. In fast-paced action scenes especially, a higher refresh rate definitely translates to more fluid movement. 60 Hz displays may be prone to jittery output during such intensive scenes. While there isn’t too much content sporting high frame rates per second, for now, High-Frame Rate (HFR) support is soon coming to films and sports events. If you’re a gamer, you may be tempted to purchase a TV sporting a high refresh rate, however, gaming consoles usually top out at 60 frames per second, so it makes sense to stick to those. 

Tip: Beware of the term ‘effective refresh rate’ since the actual refresh rate here is half the stated one. So, a 120 Hz effective refresh rate is actually the standard 60 Hz refresh rate. 


Always remember to pay attention to the number of connectivity options a TV has to offer especially if you’re one to attach a bunch to devices to your TV such as a soundbar, a streaming stick, and a console. You will find yourself running out of HDMI ports very quickly. Also, try to opt for the newer HDMI 2.1 format since they offer improvements such as variable refresh rate support. With HDMI 2.1, you also get smoother gameplay and zero screen tearing when you have connected your gaming console to the TV. You will also have future-proofed your TV for upcoming 8K content. In addition to HDMI ports, you’d also want to look for USB, Wi-Fi and Ethernet ports. 


Most smart TV sets today come equipped with built-in Wi-Fi to access services such as Netflix, YouTube, and to run other apps and play a few games. A few of the latest models can even search for content across several streaming platforms as well as live TV programs on cable or satellite. There are various operating systems and interfaces that power these smart TVs, including Google’s Android TV platform, Amazon’s Fire Edition TVs and others with native OSs. Most of these offer all the necessary features and apps, and you will need to do some research to find out which of these interfaces works for you. Beware of no-name TV OSs which clutter your smart TV experience with a barrage of pointless apps. Currently, LG’s webOS and Panasonic’s Home Screen 2.0 handle their apps and content most effectively. 


When analysing the sound on your TV, keep in mind that the higher the wattage, the louder the sound output. It is essential, especially if you have a very spacious house and need sound to travel greater distances. The best thing to do is, play a couple of loud action scenes and then listen for the following – harshness to judge whether the sound is thin and distorted at high volumes, bass for those adrenaline-inducing action scenes, voices to check if they sound realistic and the amount of detail in the sound. Also, beware of TV cabinet rattle, directional distortion and a weird ‘pffting’ sound under pressure. Additionally, if you want the best sound experience, consider investing in a good sound system set up by choosing a decent soundbar. 



8K is definitely a buzzword, both in the TV and smartphone segments, however, it makes little sense investing exorbitant amounts of money into it at the moment. 8K ramps up the detail even further than 4K, that’s true, with it being capable of delivering four times the resolution of 4K; however, the content for 8K is sorely lacking. There are no 8K films ready for purchase and streaming; furthermore, 8K will definitely be infinitely more taxing on your poor home internet connections. A few manufacturers have already brought out 8K televisions, however, let the early adopters with buckets of dough buy these pricey TVs for now. Right now, all you will get with 8K TVs is upscaled 4K content, which is honestly, not worth it. 


AliExpress is a massively popular Chinese online retail service owned by Alibaba Group. It was launched in 2010 and hasn’t stopped its journey to becoming the ‘biggest online marketplace of the world‘ ever-since. AliExpress stands toe-to-toe even with Amazon in terms of buyers worldwide. It offers wholesale goods at direct-to-consumer prices from Chinese sellers.×280&!4&btvi=1&fsb=1&xpc=ai4TqlRMo9&p=https%3A//

It also works as a great dropshipping model for a lot of e-commerce entrepreneurs. Along with a lot of good sides, AliExpress has some cons as well. The biggest problem is the shipping time of AliExpress orders, which is pretty long considering the goods come from China. Also, some orders can be very expensive after shipping charges and taxes.

So, it is a good thing to have some AliExpress alternatives whenever you don’t like its services. That’s why we are telling you about 21 best sites like AliExpress. Some of these websites offer cheaper prices and faster shipping on certain products. And, you can also use them to maintain a nice profit margin for your dropshipping business.


LightInTheBox is the perfect AliExpress alternative as it is also a Chinese e-Store. It sells hot and trending products across the globe. Their products range from phone and electronics to fashion, jewelry, shoes, bags, and many other items. You can find almost anything here at a very cheap price.

The delivery time of LightInTheBox is also similar to AliExpress as their warehouses are located only in China. But, you may get a faster shipping time due to having fewer orders to ship. You can pay for your orders with PayPal, Western Union, or your credit card.


Wish is a widely popular online marketplace where you can buy almost anything. From clothing to footwear, electronics, healthcare items, and many more things, you can get them all for an incredibly cheap price. They are also known to offer great deals and coupons to their new customers.

Their shipping time is also faster than AliExpress as their products come from sellers located in small countries. Wish also provides an advanced rating system that is very helpful for both the consumers as well as sellers. It helps promote good ones.


Overstock is a US-based online marketplace. It makes profit by selling wholesale products at a highly cheap price tag. A major portion of their stock is comprised of overstock from the major retailers or their seconds. You can find some really amusing deals here. The shipping time will also be lower as compared to the Chinese marketplaces. You can get your items within a week.

The product range of Overstock is incredible. You can find everything such as clothing, decor, kitchen appliances, and many more items. You can even find furniture and other big home items. So, you can use to fill your house with great stuff at a reduced price.


DealeXtreme, more popularly known as DX, is an amazing online marketplace. The website works in a very similar manner as ‘Wish’ and sells cheap products coming directly from sellers. It has partnered with many small businesses and sells its products to a wide base of audience.!5&btvi=2&fsb=1&xpc=x6FxDoGgJS&p=https%3A//

The shipping time is a problem with DX also because their warehouses are located in China. Apart from this, you can get some really worthy deals on DX. You should always keep an eye on their clearance sales for the best prices.


Gearbest is the perfect AliExpress alternative if you are looking to shop for the latest gadgets or electronic devices. It works with over 5000 Chinese brands and top suppliers to deliver the best products. It has products from top Chinese companies such as Xiaomi, Huawei, Lenovo, and many others. But, it isn’t just an electronic store.

You can also find a massive range of other products as well. The prices available on GearBest are reduced, and you can even reduce them with the available coupons. They also have warehouses in multiple countries. So, you can get faster shipping from the local warehouse.


BangGood is another Chinese e-commerce platform that provides worldwide shipping of cheap goods. You can find almost anything on this website, from clothing to electronics, and even home items. The prices available are marked down from their original prices. You can also get amazing deals during special clearance sales.

BangGood provides a free $20 coupon to every new user. The shipping time for BangGood orders is faster than AliExpress for certain products. However, the regular shipping time is similar.


ChinaBrands is a widely popular Chinese e-Store where you can buy products at wholesale prices. You can find almost anything on this website at a highly affordable price. Their shipping prices are also low but you will get a long shipping time. It is the perfect website for buyers who want the lowest prices but can wait for their orders for at least a month.

Most of the ChinaBrands sellers run their factories from China, and their warehouses are located there only. This is the reason for the considerably long shipping time.


Bonanza is a unique American online marketplace where you can find a great range of products. They have over 20 million items from more than 50,000 sellers. It is a growing e-commerce store where even you can sell your items. It is a preferred platform by more than 20,000 entrepreneurial sellers. You can find some really amazing handcrafted items and collectibles here.

For people looking to shop regular items, this store may disappoint you a little. The prices of some items may be a little higher than some Chinese stores. But, the quality provided will be worth it.


Here are 21 AliExpress Alternatives that you can use to shop online.

  1. LightInTheBox
  2. Wish
  3. Overstock
  4. DealXtreme (DX)
  5. GearBest
  6. BangGood
  7. ChinaBrands
  8. Bonanza
  9. DHGate
  10. TinyDeal
  11. Target
  12. MiniInTheBox
  13. GeekBuying
  14. Jet
  15. TomTop
  16. Target
  17. MadeInChina
  18. American Greenwood
  19. Walmart
  20. eBay
  21. Amazon


AliExpress is amazing but it is always good to have options when you are shopping. So, these are the 21 best sites like AliExpress. If you ever feel like you should look somewhere else, these are some stores that you should visit. You can also use these for your dropshipping business if you are an aspiring entrepreneur. Make sure you have a solid plan before beginning.

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