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Ask Aric Your Own Question
Aric, Technician
Category: TV
Satisfied Customers: 44665
Experience:  15+ years in the field. Owner of AV Installation, OEM and Repair company
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Customer Question

Submitted: 5 years ago.
Category: TV
Expert:  Aric replied 5 years ago.

Thanks for the reply.

This indicates that the power board is not powering up at all. The quick fix is that it could be simply that the fuse is blown. To access the fuse, you will need to remove the screws on the rear of the TV and remove the entire rear panel. The fuse will be located on the board where the power cord connects. Replace with one of the same type and rating from your local Hardware store.

If the set still does not power on, I would say that there is a cold solder-joint, or a failed component (likely the capacitors) on the power supply board. The capacitors failing is the MOST common problem with these sets, especially after a storm or power outage. The caps themselves can be replaced for around $150 parts and labor.

If another board had an issue, then the TV's power light would be on or flashing.

Do you have any prior experience testing voltages on live circuits, or soldering?

If not then, locating the solder joint, or failed circuit could take several hours of a Technician's time, and would require someone that knows electronics on a circuit board level.

There is no button to push to make the set work again. It would definitely require component repair/replacement.

An estimated cost to replace the entire power board (worst case scenario), would be approximately $300 parts and labor.

You can locate a Tech at the link below:

If you need further assistance, let me know.

If this answers your question, please click "Accept". Tips and Bonuses are welcome and appreciated!!

Customer: replied 5 years ago.
is it a solder fuse and is it white i dont see any glass fuse where power cord is connected
Expert:  Aric replied 5 years ago.

The fuse could be either a white ceramic, or glass fuse. Solder in and snap in types are both used regularly.






If you need further assistance, let me know.


Customer: replied 5 years ago.
how can you tell if fuse is bad
Expert:  Aric replied 5 years ago.

Use a multimeter with one probe on each metal end of the fuse. Set the meter for OHMS, or "continuity" and it will beep, or show "O" ohms if the fuse is good. If it's bad, you will get no beep, or a fluctuating ohms reading that never settles into place.


Customer: replied 5 years ago.
checking continuity
Expert:  Aric replied 5 years ago.
Ok, let me know what happens.
Customer: replied 5 years ago.
i have power thru the fuse but no lights or any power what happened is one of the mount female in tv fell in i heard a small click i thought i blew the fuse but it is good how do i isolate the problem
Expert:  Aric replied 5 years ago.

The first thing you'd want to check is the caps on the power board for bulges or leaking. Any of these needs to be replaced.

Please only proceed if you have experience measuring live voltages on a circuit board level.

Next, use a DMM set to DC volts, find a common ground on the power supply and probe all of the Outputs for voltage (correct voltages will be stamped on the power supply at the outputs). Do this with NOTHING connected to the Power supply but AC power. If a voltage is missing/ fluctuating, then the power board needs to be replaced.

If the power supply outputs its rated voltages, then connect the other boards one at a time until one causes it to shut down. This board would have the short causing the supply to SOS, and would need to be replaced.

A good source to locate replacement boards is and