Jvc Thanks for the advice. Did you mean you can fix the board I already have? How hard is it to replace? Again thanks for the input

Sounds like some kind of data interference or glitch. Dry caps will cause interference. By not smoothing inputting signals.

not unless you damaged the board, & theres no part of it have to be soldered and circuit is damaged, then it could be needed a new board.. but try to check if theres something to correct into your soldered parts and correct it again using a soldered pump to remove the bad solder.

thanks

Do you mean you have power between the grounds of the HDMI ports...if you measure the metal part of the connector to frame ground you get a voltage reading?

Hi Edwin Robinson,

First of all thank you for contacting Fixya.com regarding your TV problem.

You didn't mentioned if the symptoms remain the same in all inputs, this is to isolate the AV board from fault. If you are using HDMI connection, I would advice you to try the other inputs like input 1-3 at the rear panel and the Audio/Video input at the side panel using the RCA cables. If there's no sound after trying other inputs, then this is an indication that the fault is in the audio circuitry inside the TV.



The DIY steps that I would advice you is to check the resistance of the internal speakers using the multimeter set in resistance measurement. Good speakers will read between 6-8 ohms (for 8 ohms impedance) and you can hear a crackling sound upon testing.

How to test speakers








RCA Cable Connector



If the speakers are in good condition then the fault either the supply voltage line of the audio circuitry from the power supply board, the audio processor on the main board or the sound output circuitry. This require technical skills because series of test are going to perform to isolate where the fault came from.


Immediate solution.

You can still watch your favorite channel and movies to your TV while the sound is playing through your home theater system or amplifier. Just hooked up the video to your TV terminal jack and the sound/audio to your home theater system or amplifier to bypass the sound from your TV.


Please let me know if you need further assistance.

Have a nice day and take care!

Kind Regards,

Jdvillanueva

Hi gomeryandgee,
If the symptom didn't cure by convergence adjustment through the remote control, this is an indication of faulty convergence board inside. You may replace the convergence IC's and some of the resistor around because its already gone bad http://www.tvrepairworld.com/mitsubishi_repair_kits. You may also replace the entire convergence board for your convenient. If the board replaced with new one, your unit will back to normal again. Also, consider bad solder joints in that area, it will do the same symptom like what you've encountered right now. Find it first and re-solder. If you don't have necessary tools and test instrument and can't do the job yourself, I would advice you to look for a qualified technician to isolate the problem.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

you have a defective main board. replace the main pcb

Hi Dave: "My JVC 36" TV will not power on and has a blinking power light."

That means that the protection circuit has started because a fault had been detected.

If this happened after a power surge it is likely a faulty PSU board.

Try first leaving the set unplugged from power outlet for few hours, this will drain power, reset the protector, and fix problem related to accumulation of electrostatic charges on PSU power capacitors.

If unplugging does not work, that means that there is an internal fault.
If this happened after a power problem of some kind, that means that probably one of the capacitors on powr board had blown, and must be replaced.
The TV must be tested by a technician to find the fault.

solved. thanks

Yes, that is correct. You can either use optical or digital for the audio to the jvc system. They give you 2 options but you can use either, they both work just as well.

JVC AV-48P575 HDMI reset procedure:

1. Unplug HDMI cable from tv.
2. Unplug the tv.
3. Remove the rear (low) back cover.
4. Find the 6 pins on the board of the HDMI module and shortcut the pins no.1 and no.2 using a jumper(i use an old hard drive jumper).That's the higher to pins if you can't see the number.
5. Put back the rear cover.
6. Plug the tv.
7. Turn on the tv.
8. Unplug the tv(without tunrning it off).
9. Remove the back cover.
10. Remove the jumper on the pins 1 and 2.
11. Put back the rear cover.
12. Plug the tv and you're done.