Bought this t.v. said it didn't have sound. I got it plugged in and noticed not only no sound but very laggy display. Kind of like when a computer processor is being utilized 100%. When video isn't playing the menu, apps, and t.v in general work great. A day later trying to diagnose the sound problem I hooked up some external speakers through the RCA out and the tv worked flawlessly with exception of the antenna connection. The discovered channels would come and go every second or so. The next day turned on tv with no changes made and the extreme lag had returned. No sound except through external speakers and very spotty like the video. I gave up, got a main board in and swapped it out. Plugged in and everything worked perfectly. Internal speakers, all inputs and no intermittent digital antenna signal. TV upgraded firmware after being off for an hour or so. Restarted every thing was good still. Next day (today) get home to show the wife and the same symptoms have returned. No internal sound, very laggy picture. Not really sure where to look other than the power board. I've taken voltage readings, but not when the tv was running good.
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Re: Vizio M471i-a2 weird symptoms need help.
Okay while writing this up I was doing some troubleshooting. I found that if I disconnected the IR cable to MB I would get internal sound, but very flaky video. If I connected the ribbon cable while the tv is on (I know not a good idea) and then disconnected again, my video and sound worked fine. So figured it was the ir sensor or the cable. The ribbon cable is marked ir on one end and MB on the other. I flipped the cable backwards and now tv is working great so far. Getting good 3.3v on test points on main board ribbon cable and before was getting cycling 1.2v climbing to 3.3v on one of the pins. Guessing cable might be bad.
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Good day ladies and gentleman!
I am currently trying to repair a Grundig Vision 9 37 9880 T USB LCD TV for a friend that has a weird audio problem. Basically everything works fine except for the heavily distorted sound when the Subwoofer module is connected and there is a buzzing sound coming from the PSU PCB.
This seems to be a rather rare TV so there is not much prior on topic help to be found however a service manual is available at the usual sources (Electro Tanya i.e.).
I think the PSU buzzing comes from one of the coils near the bridge rectifier but... -
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
so i took out one of my spare gigabyte ep35-ds3r mobos from storage for use to do some cpu, ram and video card testing of stuff i bought from ebay and got for free from momaka. he bought 50 e8400 cpus for cheap from ebay some years ago and i decided to help him relieve him of some of his supply since he had waaaay too many!!
what did we say about hoarding too much stuff and depriving others of them?! *cough* socialism *cough* lol! 
i had to blow some dust off the board and heatsinks with the datavac as i didnt clean it up before putting it in storage. after finishing... -
Hi I inherited a Vizio M65-E0 that isn't working. It must have been dropped on the corner because I found that the infrared circuit had a capacitor with one end broken off of the board and some green corrosion around the plug to the main board. I re-soldered the capacitor and cleaned the corrosion well and tried turning the M65-E0 on and I was successful. My problem is that while the back lights come on and appear to perform local dimming there is no picture or sound. It kind of looks like you are looking at the TV through a very dense fog, where changing the input on the remote will change bright... -
This started a few days ago and does this about every 8 hours
After it does this it goes back to normal no bad battery icon and no weird sounds and it goes to battery backup mode so I am not sure what is going on with this battery backup
The battery backup is about 3 or 4 years old
Dose anyone have any idea on how to troubleshoot this issue I have never had a battery backup do this kind-a thing before so I am not sure exactly how to troubleshoot it and where to start
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