32" Dynex DXL3210A Won't Power On

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

Nope, there's still no response.

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

I don't know. How should I test the Tcon?

Try un-plugging it from the video board, and see if the green light will turn on. Perhaps the T-con has a short which is keeping it from coming on.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

I don't know. How should I test the Tcon?

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

How often do the main processors go bad? The TV worked fine after the first fix I did, but after 20 minutes of leaving the TV on, it just automatically shuts off back to standby.

Have we ruled out the T-con?

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

How often do the main processors go bad? The TV worked fine after the first fix I did, but after 20 minutes of leaving the TV on, it just automatically shuts off back to standby.

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

Well, I just sent an email to their contact address. If it is repairable, what kind of soldering job would I have to expect?

If the chip is bad, I would say you need to get a new board.

If the chip is not getting enough voltage, we will have to see if there is some sort of small voltage regulator on the board.

Im kind of wondering if the chip is powered by the 5v-standby all the time, or only when the TV is off. If so, maybe there is some sort of controller/power router circuit that is dud.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

Well, I just sent an email to their contact address. If it is repairable, what kind of soldering job would I have to expect?

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

So is the problem I'm having repairable?

until I can find the datasheet for the chip, I dont know.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

So is the problem I'm having repairable?

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

Heres the model

I cant find anything about that chip.

all I know is its made by MStar.

Their useless website:
http://www.mstarsemi.com/index.php

They do have a contact though, you might have to contact them to get the datasheet.

We need the more advanced forum members to help us find this.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

Heres the model

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

The top end measures 1.99V. Right now I'm having some difficultly removing the heat sink from the chip

Perhaps we can find a datasheet on this board, that might list the model of the processor, and give its pinouts.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

The top end measures 1.99V. Right now I'm having some difficultly removing the heat sink from the chip

[ben7]

Re: 32" Dynex DXL3210A Won't Power On

Tieny, measure the voltage at the top end of RS34, it seems normal for the base to be about 0.65v, because RS34 limits the current. I'd expect it to be somewhere around 2-3v.

I suggested finding the processor model, so we could find the pins for it's Vcc (+V bus), and measure those.

[budm]

Re: 32" Dynex DXL3210A Won't Power On

Yes, that is a lot for 32", but a year from now it may get a lot cheaper, so wait for it.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

A bit too pricey, I might just have to bail out on this one =/

[budm]

Re: 32" Dynex DXL3210A Won't Power On

http://www.shopjimmy.com/dynex-6kt00...dx-l32-10a.htm

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

Which numbers?

[budm]

Re: 32" Dynex DXL3210A Won't Power On

The main thing is that you have to match the number as printed on the white barcode sticker.

[tieny]

Re: 32" Dynex DXL3210A Won't Power On

I looked around on ebay, found one for 50$ at the lowest, but it says its for the Dynex DL-26-10A however its the same board number. I'll look around elsewhere to see where else.

The board number is 569KT0169E

and heres the one I looked at http://www.ebay.com/itm/DYNEX-DX-L26...item3a775ba5c2