I Have A Bush 26", A626 Lcd TV...On star up screen is grey and some lines, after approx. 20 minutes it clears & works O.K..? Sound is fine.I have changed the T-Con board but that seem o.k. All capacitors are clean and flat with no poppers..! Any Help..?

Check and replace its main system control memory IC. It is faulty.

I have the same model Sharp TV with the same symptoms. The TV would sometimes work perfectly, then go to white screen (audio OK) and sometimes back to working perfectly again.

I saw Posts saying to check F404 and Q413 - My fuse F404 was not blown, and replacing the Q413 transistor did not fix it.

On Q413 I had about 12.4 VDC on the Emitter, 12.3 VDC on the Base and about 1.5 VDC on the Collector. My service manual called for 11.6 VDC on the Base lead. As a Test, I used a 150 Ohm resistor from Q413 Base to metal chassis ground, and that made the TV work OK.

I replaced the Q419 NPN silicon driver transistor, and now the TV has been restored to 100% proper operation.

I hope that helps someone else down the line.

Hi there are a few things that could be wrong with that TV. The power supply can be faulty, you can check it for bad bulging capacitors and replace them and see if that fixes the problem. The other two things would be your signal board or your T-con board. The T-con board would be the most likelly.


you can get parts for this TV at www.interliquidparts.com

Could ba a power supply problem. Check for for bad capacitors (tops look domed instead of flat).

Your TV will likely require repairs for this issue to be resolved. Service can be obtained by carrying the unit in to the place of purchase.

While you have sound, take a flashlight and shine it on the screen, look very close and see if you can see a dark video image.
Let me know what you see.
lone99star

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

Try moving a medium powered magnet (not one for picking up heavy objects and not a refrigerator holding one) over the distorted area. If that doesn't work, try a more powerful one. This worked for my Toshiba LCD. Good luck!

pannel failure. the lines will become perminent.

Unplug the TV to let the memory clear. Wait 1 minute, replug, see if that works.

My new TV LCD Samsung LC32C530 Series 5 has one half darker and with less contrast than the other.This is noticeable now always. There is a distinct and clear division down exactly half the display which separates the dark and light sides.. Any ideas?Thank you.