KDL-46EX621---No Power/No Standby---Bad PS?

[holmzy]

Re: KDL-46EX621---No Power/No Standby---Bad PS?

90% of sony psu boards are fuse or diode or thermal fuse resistors

[ALR]

Re: KDL-46EX621---No Power/No Standby---Bad PS?

I'm guessing that's the only issue but we shall see. Since it was a 4 blink code and that is a mainboard issue as well and now the flow chart is telling me mainboard issue, it probably finally just gave out which is why it won't power on now.

Seems the last time I thought PS and got the part, it was mainboard. I've only had PS issues when there was a short but I know that's not always the case but lesson learned I guess.

[ALR]

Re: KDL-46EX621---No Power/No Standby---Bad PS?

I have a quick question. I have this Vizio where half screen would go black, hit the top corner and it'll fix itself. Took it apart and I replaced the inverter board because a solder pad bridged with a pad on the component next to it and it was obvious this was the issue cause it was the top of the inverter, exactly where you would hit the side to get it to work. But now it's doing it again and slowly getting worse.

Could it be LCD or inverter(got it used from Ebay) I'll try and get model # later and pix of it but hoping someone may now off hand from experience.

[budm]

Re: KDL-46EX621---No Power/No Standby---Bad PS?

90% of sony psu boards are fuse or diode or thermal fuse resistors

Ha????

[holmzy]

Re: KDL-46EX621---No Power/No Standby---Bad PS?

Ha????

sony are very silly with their fuses and there are many on both psu and main boards. if the fuse is fine on the psu was the fuses on the main checked??

[ALR]

Re: KDL-46EX621---No Power/No Standby---Bad PS?

So, after getting the replacement board in(found for 98 shipped!) popped it in and got some signs of life. After messing with it for a few and wondering why it wouldn't turn on(standby flashed 5), I took apart the Tcon cover and noticed the flex cables were disconnected from someone tinkering with it before me.

Got that situated and had the amber/green flashing lights. Downloaded the software update, popped it on the usb and it started right up to the software update screen.

Mainboard fixed the issue I was having for sure. Thanks for all the help Bud