Electronic equipment repair and service manual search discussion :: Topic review

aquamon · Posted: Wed Jul 13, 2011 6:57 pm Post subject: vizio

had one with "serial talk" to uproc with solder sliver...dirty solder job from man. use heavy magnifier.

biggertv · Posted: Sat Jul 09, 2011 12:14 am Post subject:

Maybe caps in power supply. maybe worse. I installed an RCA power supply in my Vizio, had to re wire the connectors but all is well and better than new. I can try to repair your board, Im in Florida.
First unplug the set and disconnect all cables let it sit for 15 minutes, you might get lucky. Can you check power supply Voltages? You should test before buying any parts.

minnie · Posted: Fri Jul 01, 2011 4:23 am Post subject:

If you lost audio then the set went down, suspect the main board.

http://www.vizparts.com/product.php?kw=E550VL&x=20&y=7

SLICKWILLIE · Posted: Fri Jul 01, 2011 1:23 am Post subject: Vizio Power Supply?

I have a Vizio E550VL.

About a week ago, we had a bad thunderstorm, and the TV went out.

When we turned the TV back on, everything seemed fine, but there was no audio on any of the inputs. I was going out of town the next day, so I didn't worry about it. When I got back in town today, I had the same problem. I mainly use HDMI (HD cable and PC) -- I could get a picture for both, but no audio at all.

Within 15 minutes of fiddling with all the settings, etc... the TV turned itself off. Except instead of having the amber VIZIO logo lit up, there was nothing (no backlight -- white OR amber).

Unplugging the power from the back of the TV then plugging it back causes a very SLIGHT click, but no amber logo. Sometimes, if you leave it plugged in a while, the logo will light up amber briefly (with a louder click) -- but then go away. Sometimes the logo goes to amber (and then totally off) very rapidly. Even if the amber logo stays on long enough to try to power on the TV, it won't power on at all.

I'd hate to totally junk this TV if it's something I can change for a few hundred bucks. I build PCs, so I feel confident I could change a power supply or component part if I had reasonable assurance that was what the problem was. I'm not too worried about having no audio (if that is unrelated), because I can always pump the audio from the PC or cable box through a receiver. I'd just hate to loose a 55" flatscreen I bought less than a year ago...

Thanks for any suggestions. Please let me know if I can provide additional information that might allow for a better diagnosis.

WILL