hi everyone,
my parents in law have seen their Bravia Sony LED 32EX600 TV set stop after a lightning strike. After being plugged to mains, it shows nothing no power LED on bottom left shines.
On the power PCB (GE3b, attached pic), I chacked the fuses and the only roasted one is R6536 : 0.47 ohms, 1/2W. After replacing it, I made some voltage measurement with ref to the chassis :
- the 450V/150uF capacitor voltage when plugged is normal at 394V
- from connector CN6150 (15 poles)
STBY normal 3.3V -> I shunted it to 3 (POWER ON) and 11 (BL ON) and unplugged...

Re: Viewsonic VX2255WMB-DAC 19M011

Dear RJ, yes, the capacitor DC voltage before discharge is about 30V and slowly decreases when connected to multimeter probes. This blown fuse may be responsible for the bad smell I felt after I had changed the CapXcon caps and connected to mains. Could you please indicate me on the pictures where is this fuse I should check (recto/verso) or give its reference number? F101 seems ok. I found on a Russian website the schematic but am not able to decypher it.

Re: Viewsonic VX2255WMB-DAC 19M011

thank you for your answer R J. I will test for that. But you confirm that the main capacitor DC voltage is incorrect on my original DAC card and it should be replaced. I'm trying to obtain a refund from Aliexpress seller for his dead card.

dear sirs,
please excuse my English if any mistakes, I'm coming from France. I have a faulty Viewsonic VX2255WMB display that I would like to fix. I have disassembled it and found the DAC 19M011 that seems to be the culprit. I first changed the CapXcon C204, CE101/102103/104/105 capacitors. No other capacitors seemed doomed. After this, I connected the board to wall plug, the ON/OFF led got blue and red, and had a bad smell on the left side of the green DELTA coil. I could not identify the source and some component(s) start chirping. I checked the transistors and fuse that seem ok.
...

Re: New Members - please post your introductions here

hello colleagues and chief Topcat,
I am trying to repair electronic devices with faulty displays. I have identified and extracted badcaps on Belinea 19" screen ~10 years ago; Works like a charm. At present time, having inherited from a Viewsonic I changed flawed caps but it is not enough. With a little help from my friends... Regards,
Pierre