DYNEX DX-32E150A11 No power, LED, or any life

[Patm233]

Hey all I'm pat and I appreciate anyone's input on this.

Last week a family friend gave my parents a non-working LCD tv. Last year, I was given a nonworking LCD and it had bad capacitors so it was a simple fix. This tv however is giving my father and I a run for our money. i'm not so great with repairs, but my father is fairly good at all the technicals.

We checked the capacitors, nothing. Fuse looks fine, nothing seems out of place. We tried multiple power cords in multiple wall recepticals and no luck.

Any ideas? I took some pictures in case you may see something we don't. If you need close ups I can retake some.

[awyatt2]

Re: DYNEX DX-32E150A11 No power, LED, or any life

do you have a vom to check the output voltages? the power supply (brown board) is labeled at coectors as to what they should be. check them first post the voltage listed ad what you actually get.
stby 3.3listed 1.2 actual

[Patm233]

Re: DYNEX DX-32E150A11 No power, LED, or any life

I assume you meant connectors?

We're supposed to read 24V at either connector and are reading 0 (zero).

[Mr Bill]

Re: DYNEX DX-32E150A11 No power, LED, or any life

Check the fuse with your multimeter set to OHMs and see if it reads 0.000, if it's more than 1 ohms it's bad. Then with the tv plugged in (not on). Set your meter to DC volts and put a your red probe and black probe on the 2 legs that come from the large cap. I drew a square around it. Be careful not to touch the 2 probes together when you are checking the large cap.

[Patm233]

Re: DYNEX DX-32E150A11 No power, LED, or any life

We've got 0.3 OHMs on the fuse.


large cap reads 167.5 DCV

[Mr Bill]

Re: DYNEX DX-32E150A11 No power, LED, or any life

We've got 0.3 OHMs on the fuse.


large cap reads 167.5 DCV

That's good.
So the set won't turn on at all? Can you take a clear top and bottom photo of the power supply, larger size? Try and get it 2000 x 2000. You might have to use windows paint to shrink it down.

[awyatt2]

Re: DYNEX DX-32E150A11 No power, LED, or any life

does the voltage increase on the large cap whrn you try to power it up or stay the same?

[Patm233]

Re: DYNEX DX-32E150A11 No power, LED, or any life

Tried to get it as clear as possible so I broke the back into two photos and the front into three. Let me know if I need to snap a certain area

[Patm233]

Re: DYNEX DX-32E150A11 No power, LED, or any life

does the voltage increase on the large cap whrn you try to power it up or stay the same?

When I plug it in, it increases

[tom66]

Re: DYNEX DX-32E150A11 No power, LED, or any life

To what voltage does it increase to approximately?

[Patm233]

Re: DYNEX DX-32E150A11 No power, LED, or any life

After plugging in it'll hit about 167. Then he discharged it which lowered to 150, but then it goes back to 167 again

[awyatt2]

Re: DYNEX DX-32E150A11 No power, LED, or any life

it should show an increase when you plug it in because it charges to stby voltage but it should increase agian if it starts up. somewhere near the main cap you should find a 8 legged ic with a small electrolytic cap closeby usually 10 to 47 uf at about 50v or so try replacing it and see if anything changes

[MisterD]

Re: DYNEX DX-32E150A11 No power, LED, or any life

I suggest that you plug in all connectors, secure the power supply board with all mounting screws, even though the TV will not power on go ahead and check and record all voltages on both of the white connectors on the PS Board and report them back here.