Re: 32" Dynex DXL3210A Won't Power On
yeah this is the problem I mentioned in post 64, having trouble trying to figure out where the P_ON trace leads
32" Dynex DXL3210A Won't Power On
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Re: 32" Dynex DXL3210A Won't Power On
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Re: 32" Dynex DXL3210A Won't Power On
Nope there doesnt seem to be a chip near there on the bottom.
The resistor you mentioned in post 67, R680, when I measure the left side pin of it, I get a reading of 5.30V and 0V if i measure the right side. Would it still be the same trace, since P_ON measures 3.06V?Last edited by tieny; 07-23-2012, 02:10 PM.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
Ok, you meter is calibrated ok, and the 81R means the resistor is 81 ohms.
Seems almost like its supposed to be a pull-down resistor, but the chip that drives it seems to be shorted. 81 ohms is also low resistance for a pull-down/up resistor.Last edited by ben7; 07-23-2012, 01:35 PM.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
It reads 81R, When I put both probes together I get 0.04 ohms.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
Is your meter calibrated? (put both probes together, it should measure nearly 0 ohms)Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
Measuring from the P_ON pin and the resistor (Red probe on P_ON and black probe on the resistors pin), I get 4.72 ohms on the left side and 5.36 ohms on the right.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
I tried tracing the pin back to any connecting components using the continuity function on my multimeter but i couldnt seem to find any before. Ill give it another try once i get home. Theres a closeup photo of the pin and nearby components in post 59 if you have any suggestions.
And Im not talking about taking a picture on the back side of the board, there are no traces there to track from one of your other photos.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
I tried tracing the pin back to any connecting components using the continuity function on my multimeter but i couldnt seem to find any before. Ill give it another try once i get home. Theres a closeup photo of the pin and nearby components in post 59 if you have any suggestions.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
I dont think the PSU is bad, since all the output voltages appear on it. The problem is that once the tv is plugged in, the p-on voltages appears consistently. As before when the tv worked, the p-on voltage read 0v until i pressed the power and it rose to 3.3v. As budm suggested it could be a main board problem that is sending out the signal to the psu too early. Also the voltages on the 24v going to the inverter board is appearing too early.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
I dont think the PSU is bad, since all the output voltages appear on it. The problem is that once the tv is plugged in, the p-on voltages appears consistently. As before when the tv worked, the p-on voltage read 0v until i pressed the power and it rose to 3.3v. As budm suggested it could be a main board problem that is sending out the signal to the psu too early. Also the voltages on the 24v going to the inverter board is appearing too early.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
Im sorry, but what is the problem again? Have you actually figured out that the PSU is bad?
You can also check the mosfets on the primary side, and on the transformer, you can check to see if any windings are open-circuit.Leave a comment:
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Re: 32" Dynex DXL3210A Won't Power On
What components on the main board are simple to test?Leave a comment:
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