Question about JVC AV-48WP30 48" Rear Projection Television

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Power-on problem I'm having a problem with my JVC set. It won't power on, all I get is the blue indicator light come on and then a popping sound from the speakers but no picture. The only way to stop this is to unplug the set from the wall. Any suggestions as to what it might be would be greatly appreciated. Thanks

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Re: Power-on problem

Yes..jvc has an upgrade for the crt driver ic's replace all three chips and resistors note: resistors must be replace at time chips are replaced now call a local tv guy you know the fix!

Posted on Sep 12, 2007

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Our jvc tv made a popping sound and now has no picture. It also buzzes 3 times and the red and blue lights flash fast on front.

Something went bye bye. Check out your power supply for bad, burned components and/or blown caps - the latter often explode in their death throes.

Nov 03, 2015 | JVC HD-52FA97 HDTV

1 Answer

The front panel has a blue light and power , but i am not getting a picture or sound.

The blue light on the front panel merely indicates that power is getting to your TV. It is likely that there is a failure of the internal power supply

Mar 07, 2013 | JVC AV-48WP74 48" Rear Projection...

1 Answer


Sounds like a warranty job - pop noises are electrical shorts - Possibly the power supply unit.

Jan 31, 2013 | Projection Televisions

1 Answer

My jvc av48p575 just turnt itself off and now doesnt turn on when you plug it in the blue power light comes on for a second and thats it....any solutions?

I f blue power light comes on and just blinks that is a short and if so I can tell you how and where to look to the problem---also if this happens do you hear a high pitched sound?

Usually in this set if a short blue light comes on and constantly blinks.

Let me know more

Apr 08, 2012 | JVC Projection Televisions

1 Answer

The blue power light flashes and you can hear a popping sound but no picture or audio

I hook up another set of speakers to my tv that was connected to a amp.when we turn on the amp it blew something we could smell something burning it the tv

Jul 03, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Please help!!! Problem with JVC DLP TV

You need to replace the power supply board. The new ones have a bigger heat sink - obviously JVC knows about the problem because they made the new ones bigger. It cost $250 from JVC and I installed it myself - took about 3 hours to do. If you are not tech savvy call a repairman. Hope this helps.

Feb 03, 2009 | JVC HD-52G786 52" Rear Projection HDTV

1 Answer

1.5 days after replacing both IC chips the blue started ghosting again and then...

The biggest problem you stated yourself. You bought aftermarket type IC's. You should have been smarter and purchased the correct IC's for the set. All IC's are not alike, even with the same number on them. Aftermarket IC's are just that. Built in China or are factory rejects. You might get away with replacing the iC's again from a reliable dealer or you might have messed up the power supply in the meantime. Good Luck

Mar 02, 2008 | JVC AV-48WP30 48" Rear Projection...

2 Answers

Popping noises and no picture or sound

try replacing the stk's on the deflection board (making sure that all of the resistors on the board are OK and that there are no solder cracks I found one of the jumpers had a bad solder joint on the one I worked on) but if that doesn't fix I have some raw research that might give you somewhere to start :
No. The CRT driver ICs are prone to shorting and cause this symptom (I just had one with those very symptoms and the green CRT driver IC was shorted). Disconnecting the CRT board does not clear the short on the board. Often then is a small burn mark on the CRT board under the affected IC (but not always). The IC should be a TDA6111Q. Be sure to note the proper position
of the IC as it should face with the letters TOWARD the heat sink!!!!

Larry, Check the CRT driver ICs on each of the CRT boards.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7769 FAX
Hi Guys, I don`t see many JVC`s and don`t have the print for this AV48WP30, went out this morning and as customer claimed on phone when you plug set in and turn on it makes a loud thump thump in both speakers 20-30 times then relay clicks, the thump stops, and blue idiot light on front goes dim/bright, dim/bright, have to unplug set to start this same scenario over again. Never develops HV or audio, Will order the service manual today, but would like to know if anyone has seen this before (should say "heard" this before)
I would disconnect each crt board and hv lead one at a time and try. Have seen several bad tubes on that model. The only other problem I have seen on that set is bad convergence amps, however that doesn't cause shutdown.
Perry Bower
Electric Medic
From Tech Repair CD:
JVC\AV48WP74\just went click*click*click when turned on Video drive IC (IC1101) on the red CRT module
shorted. It looked like bad solder on the B+ was the cause

Frequently Used Top Five Repair Parts by symptom code
Above from JVC Web site, also I have seen shorted video drive IC's on the crt boards short and cause this symptom. Try unplugging the 200 volt source to the crt boards and see it the set powers up and stays on. There is a B+ relay which supplies 130 Volts to the horizontal output circuit. Is this relay energizing? I takes about five seconds after the power is turned on for it to energize. If a short is detected on the 130 volt line the blue power lamp on the front will do what you describe and the relay will pulse on and off. (David)

Non-functional Digital Input
1. Power off the unit
2. Disconnect the digital input if it is connected
3. Remove the rear cover
4. On the digital input module, using a shorting pin (PC type) or a
jumper, short Pin 1 and Pin 2 of the
SB connector
5. Power on the unit
6. Unplug the unit and remove the shorting pin or the jumper
7. Re-attach the unit’s rear cover
8. Power on the unit, and input the digital source

Jan 16, 2007 | JVC AV-48WP74 48" Rear Projection...

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