Re: Vizio VX32L turns on with backlight, no video or sound

I replaced c18 and c34. I am still getting the same symptoms. Where to from here?

Re: Vizio VX32L turns on with backlight, no video or sound

I soldered in the new (correct adjustable AP1117EGDICT-ND regulators) into u7 and u9. The problem of no sound/no picture, but + backlight still exists. These are the readings after i replaced u7 and u9 (done the correct way-pins 1-3)
These were all AMC1117,F0646J

IC PIN 1 Pin 2 pin 3
u7 0.001; 1.258; 3.351
u9 0.249; 1.493; 3.350
u33 2.095; 3.359; 5.08
u8 2.080; 3.339; 5.12
u2 2.071; 3.332; 5.13
u4 2.079; 3.334; 5.12

according to...

Re: Vizio VX32L turns on with backlight, no video or sound

OK, so I'm rereading posts, have new adjustable regulators on order (to replace the wrong AP1117E18 fixed voltage regulators I put in ). Not much to do until I get those parts replaced, but attached are a series of photos of the main board.

To summarize:
Problem: Vizio VX32L (2007) TV powers on, backlight is on, but no sound, no picture, and only way to turn TV off is unplug. All other controls are unresponsive (both remote and the buttons).

Inspected/Tested/Tried:
No visible...

Re: Vizio VX32L turns on with backlight, no video or sound

Well, Crud. Live and learn...Another order to Digikey for the right parts.

According to the website, AP1117EGDICT-ND is adjustable one (correct me if I'm wrong). I'm 99.9% sure they were all the same AMC1117 chips on there. One didn't make it through the desoldering process intact, and the other was definitely an AMC1117.

I'm slightly confused however... some posts seem to indicate these chips should all be about the same 5.0, 3.3,2.0, but other posts have indicated U7 and U9 should be 3.3,...

Re: Vizio VX32L turns on with backlight, no video or sound

These were all AMC1117 ICs- I was getting these readings before I swapped U7 and U9 out. I replaced them with AP1117E18GDICT-ND (from digikey).

U9 is 3.3, 2.2, 0.4
U8 is 5.1, 3.3, 2.0

I messed up when typing those in before and missed a line.

I also checked U15 and am getting 5.15 in and 5.05 out, and I checked the fuse on the T-con board (I'm assuming that's what it was- at the top of the set under a few layers of metal) and it was good.

Thanks for your...

Re: Vizio VX32L turns on with backlight, no video or sound

I'm stuck. I've read through the posts on this. I too have a Vizio VX32L with the backlight on, but no sound, no picture. I turned the TV off via remote control, and the white light stayed on, but the picture turned off. Since then, I can only power it on, and must unplug it to get it to power off. From the sound of it, the problem is U7 or U9 or U33. I replaced U7 and U9 and get the voltages below:

IC Top Mid Bottom
U7 3.3 1.8 0
U8 3.3 2.2 0.4
U33 5.0 3.35 ...