Question about Protron PLTV-32 Television
You will need to inspect the power supply. The chances are real good you have bad capacitors in the power supply. I would estimate there will be 5 capacitors that will be replaced. You may change them all, which is best. Some capacitors will check good when they are not. The power supply will be the smaller of the two boards inside this TV. It is also the easiest to pull out. You may use a capacitor checker to locate the bad caps. This is know as an ESR meter. Once again, it may show a good cap when it may in fact be a bad one. This is rare of course, but I have been there. Please replace all caps in the power supply board. If there is a good capacitor it will be the 400 volt 100Mf (Largest capacitor in the power supply) that is fine! Thanks for asking and show all hands of support.
Posted on May 21, 2011
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Posted on Jan 02, 2017
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Zero-crossing signal problem
• The main PCB does not detect the zero-crossing signal (Z CROSS SIG) for the time specified below.
Poor contact in the connector terminals. - Check the connection of connectors YC1-3 on the main PCB and YC2-6 on the power source PCB, and the continuity across the connector terminals. Repair or replace if necessary.
Defective power source PCB. - Check if the zero-crossing signal is output from YC2-6 on the power source PCB. If not, replace the power source PCB.
Defective main PCB. - Replace the main PCB if C6400 is detected while YC2-6 on the power source PCB outputs the zero-crossing signal.
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