Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

[Chungalin]

No solution to this one yet. Possibly there won’t be any.

Vertical lines covering all the panel, they depend on image. See pictures. Greenish one is with antena connected. Blueish one is without antena. White strip moves every second, I guess there’s a "no signal" screen saver moving along the screen. See the rounded "aura" that looks very familiar to T-CON problems.

Visual inspection at T-CON is normal, nothing burnt or ugly. It has a Global Mixed Mode G5562A Bias Power Supply IC. It has two coils and two diodes (DC-DC). One measures 16V and the other is 3.3V. I can measure other T-CON testpoints if they’re relevant to this issue.

Can it be saved?

[Diah]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

read my post about Hisense, i had white and solve it with Flash LCD driver, search your model at different region of Hisense, and flash complete firmware it may help

try this i found at spain server

http://www.hisense.es/es/descargas-d...are-lhd32d33eu

[Chungalin]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

I’d have bet that this is no FW problem at all, but I’ve tried anyway. It’s risky to upgrade FW without seeing anything on screen. Connected USB with bin file and plugged the TV. LED starts flashing between blue and red, slowly. After a minute it blinks faster, indefinitely. After 10 minutes I decide to unplug and plug again. Same problem, as expected. Now it seems it has lost tuned TV channels.

[Diah]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

after Flash finished the Tv go to standby mode. so no need to unplug it.. how about when it start show the logo correct.? if no, then need first to inspect the panel taps if there water damage.

[Chungalin]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

after Flash finished the Tv go to standby mode. so no need to unplug it.

Not in my case. I've tried two times. Got tired of waiting for it to go to standby after 15 minutes. I don't know if it has updated, but now I'm unable to put it in TV mode. No improvement in image.

I've removed front frame to inspect LCD glass borders and tab bonds. Nothing to report. No abnormal dirtiness or cracks.

Seems bad LCD panel to me.

[attainteddragon]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

have you disconnected one of the ribbon cables that links from the t-con to the panel to see if you get half a clear picture. do each side and see what happens.

[Chungalin]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

This T-CON is not detachable. It’s a long PCB that has 4 tab bonds that go directly to LCD panel. No connectors. I’ve touched every tab bond with no changes in image.

[attainteddragon]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

doh, not sure if you had a shorted cap on the panel driver board, that it would give you a pic at all, but worth checking.

[Chungalin]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

Thanks for all advice and ideas. This case is closed with no solution and the TV is back to the customer.

[geeforce]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

This looks like the same problem as a tv I was thinking of buying... Maybe I should avoid it...

Haven't physically seen it however.

[kajubi]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

I can easily fix this in just 30 minutes .That problem is related to missing Von or Voff on the COF ,the Cofs comes in about three different types .You will have yo bypass that missing voltage using a very small wire for my case I get those wires from 12v Relays .For more info about this am always available at no charge.Even on other models.

[mmartell]

Re: Hisense LHD32D33EU repair, vertical lines, T-CON, BOE HV320WX2-206 cell

I can easily fix this in just 30 minutes .That problem is related to missing Von or Voff on the COF ,the Cofs comes in about three different types .You will have yo bypass that missing voltage using a very small wire for my case I get those wires from 12v Relays .For more info about this am always available at no charge.Even on other models.

Then feel free at no charge to start a thread documenting how to do this repair next time you fix one.