My wife's 36" Sony WEGA dead with codes
 

We have a Sony KV-36FS120 flat tube set, which is one of the last "basic" standard def sets Sony made in '04. It was unplugged, then when I hooked it back up, no startup and it's flashing a code. It seems to be 9 blinks, then 7 blinks, then 8 blinks. The horizontal output's not shorted, and no blown fuses I can see. I don't have the schematic, and I'm about ready to just mail the board to my old friend in Los Angeles who is still a Sony tech, and he'll probably do it for me as a favor exchange. But meantime, does anyone recognize those codes as being something classic? My friend says code 7 is overcurrent on the 130 volt line, but it's definitely not only blinking code 7.

Charles

I asked a friend who has a repair shop here in SD. He recalls there being a bulletin on this model and a few others for this problem. 1st, check for poor solder joints on the 'A' board in the Zero Crossing Detector circuit (ZCD) and Q605,D690 then Q690. Also check D647 for short.

Edit: With the board solder side facing you in the service position, the effected components should be located on the lower midpoint of the mainboard.

Hope this is useful.

Thanks, Jordan... I'll pull the board and take a look today! Results later.

Charles