Question about JVC HD-52G787 52" Projection Television

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My jvc av-32f476 tv screen doesnt work, the tv turns on but no picture or sound

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 150 Answers

SOURCE: HAVE PICTURE BUT NO SOUND

check for center channel option in menu, change option and test

Posted on Jul 11, 2007

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SOURCE: jvc Av-48wp30

try unplugging for a few seconds the plug it back in

Posted on Jul 16, 2007

  • 93 Answers

SOURCE: JVC AV-32f704

the problem is your high voltage section in the main board of you tv,try to resolder the the circuit and components near the flyback

Posted on Oct 18, 2007

  • 12 Answers

SOURCE: JVC AV-48WP30 48 in. Rear Projection

this is the raw research for this that I have found. It seems like the most likely culprit for this is the stk chips on the convergence board (JVC didn't put nearly enough heat sink compound on should be a small layer all the way across they put on a couple dabs) I hear tale you can check this out by disconnecting the convergence board and turning on the set . only go after the convergence board from the front (behind the speaker grill is another panel, the convergence card is right behind there) there is a sneak circuit which will kick in possibly destroying at least the dvi input and mabie more if the set is powered on with the back removed and you didn't put a jumper in the right place or cover over a hole in the back of the dvi module (supposidly to keep people from hacking movies, like there arn't easier ways to do that if you really wanted to). if that doesnt fix it then I have found several other possibilities but I am now a few hundred miles from the tv that I was working on so havent had a chance to try this out:
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)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
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
MODEL NUMBER : AV48WP30 - TV
SYMPTOM CODE : DEAD
TOP FIVE PARTS :
2SC5552-RL
2SC5904-RL
QQH0113-002
STR-F6629B/F7
STK392-110
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)

Symptom:
Non-functional Digital Input
Solution:
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

Posted on Dec 06, 2007

petraman7
  • 1175 Answers

SOURCE: Lost sound on JVC TV

http://www.amazon.com/JVC-AV-48WP30-Widescreen-HDTV-Ready-Rear-Projection/dp/B000066R7X

Cut and paste this link. Amazon's page has a link to the JVC manual. That'll tell you what you need to know

Posted on Feb 28, 2008

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Jan 18, 2016 | JVC Televison & Video

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The picture is to big for the screen it doesnt


Get into setup for zoom function. Or, like my remote, the zoom fuction is right at the bottom with no menu to go to.

Jan 05, 2010 | JVC AV-32F475 32" TV

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JVC AV-32F476 on timer green no picture no sound


Power supply failure, expect to pay $100-150. worth the investment JVC made some good tvs Julio milleniumtvsvc@gmail.com

Jul 22, 2009 | JVC AV-32F476 32 in. Television

1 Answer

JVC model AV-F2983


i move you out of HP computers
to TV , JVC
asking TV repair, in a text box?
its huge topic, take a class on this?
ask JVC for books, yet,
or goggle all day for ********/?

Aug 19, 2017 | JVC AV-32F476 32 in. Television

1 Answer

Av-32f476 picture shrinkage


I had a Crummy Westinghouse TV that had a problem like this. JVC's are typically better built then a Westinghouse. My first educated guess - sounds like it's a voltage issue, most likely on the high voltage. Probably a capacitor on the power supply side of the motherboard or the capacitor in the flyback transformer. Just and educated guess.

Jun 23, 2008 | JVC AV32F476 32" TV

1 Answer

Blank box


Turn off the Closed Captioning feature. On channels that don't have closed captioning, you just get a blank box.

Jan 24, 2008 | JVC AV-32F476 32 in. Television

1 Answer

Distorted Picture Proportions


well i beleive ur tv still have a warranty since it is purchased less than a month ago according to you. i suggest that u use it and have it check with their technician. it seems that there is an internal problem with your tv, particularly the vertical circuits. did u try to hook up another tv? this symptom is caused by a poor vertical linearity wherein the image is compressed or stretched at the top or bottom of the raster

Jan 16, 2007 | JVC AV-32F476 32 in. Television

1 Answer

Delay with channel surfing


Two things I would check before contacting JVC. In the on screen menu does it have a setting under tuner controls to disable AFC? It sounds like the tuner is seeking the proper channel frequency before it locks it in and displays a picture. If there is no such setting, then I would try a channel autoprogram in the cable mode. I'm assuming you have no cable or satellite TV box hooked up to the set. JVC is usually a pretty good brand name.

Dec 19, 2006 | JVC AV-32F476 32 in. Television

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