Re: DX-LCD32-09 No Picture - Good Sound

I have given up trying to fix this TV. I could not isolate the problem so I just sold the TV for $25 for parts. I read too many horror stories about Dynex TV quality, Best Buy service, and people replacing boards to no avail.

To eagle00799: I read a forum post somewhere in which the guy found loose connectors along the side of his LCD display. He had to dismantle the entire TV, try to reseat all the connectors, and then reinforcce the connectors with cardboard between the connectors and the frame. You might explore this as a...

Re: DX-LCD32-09 No Picture - Good Sound

I have been conducting more experiments trying to isolate my problem. As I have already said, I get a vertical line pattern when hooking up devices such as a computer. Using a computer attached to the VGA port, I can get an unchanging line pattern on the TV if my computer has a static image. If I change the image on the computer, the line pattern on the TV changes but once the new pattern appears, it does not change.

So I started thinking: shouldn't bringing up the Menu on the TV force a different image and shouldn't this cause...

Re: DX-LCD32-09 No Picture - Good Sound

I did not power off/power on the TV after heating the boards yesterday. I tried the power on/power off approach today. No change - just the lines on the TV.

Re: DX-LCD32-09 No Picture - Good Sound

I tried the suggestion from Th3uN1Qu3. I thought this was a really good suggestion - non-invasive and isolating the bad card. First, I hooked up a computer to the VGA input so I had a stable/unchanging line pattern image. I heated both boards in succession, first on low (got no change) then on high. There was no change in the line pattern at all, and certainly no real picture. I then tried heating other parts of the TV. I tried the power board and the inverter boards. I tried heating around the frame where there are supposedly connections...

Re: DX-LCD32-09 No Picture - Good Sound

I got down to the T-Con card (again). This time I hooked up the TV so I could power everything and take voltage measurements. I am also attaching internal photos.

Referencing the post in my initial post, I took voltage measurements on the T-Con. These are as follows:

VGL: -6.5
VDDD: 3.4
VDDA: 15.1
VGH: 22.4

These seem pretty close to the referenced appended so I think they might be close enough. As I said in the first post, the resistances on the T-Con also seemed to be close...

Re: DX-LCD32-09 No Picture - Good Sound

Some additional information. I checked the power outputs from the power board. There are three sets of connectors down the left side. In the lists below, the first value is the value written on the board; the second value is the reading; the third value, if shown, is the value written on the target board if different than power board. Starting from the top, here are my readings:

First connector:
PON 2.5
GND 0
5V 5.3 STB
GND 0
GND 0
16V 15.5 12V
16V 15.5 12V
GND...

I got a DX-LCD32-09 from a friend. She says that is always warmed up slowly (about 1 minute) but it worked, until recently. Now when it powers up, it slowly gets to an all white screen (30 seconds). I looked at this forum ([url]https://www.badcaps.net/forum/showthread.php?t=18420&highlight=DX-LCD32-09[/url]) which seems similar but it was inconclusive. Here is what I have.

1. When I power up, the screen lights up erracticly (see Power-Up photo sequence).

2. If I cycle through the input modes, the screen is black on other modes.
2A. Unless I have a device...