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

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Blue light flashing - no picture speakers thump

Seems this is a popular problem? Well, I have read some of the similar posts - but I'm a bit confused...how can you narrow down the culprit?? The convergence board or the deflection board? HELP -

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  • JVC Master
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Do not remove the rear panel with the power cord still plugged in on your model or you will instantly wipe out the digital circuits. Its a safety feature. remove the front speaker grille screws are on the side and inside the door under power button. Then after you remove the speaker grille remove the small access panel and you will see the convergence board on the right side thre are 3 wire plugs on the right side of the convergence board. Un plug thos 3 wire plugs and try to power up the set if it powers up the problem is convergence. If it doesnt its the deflection. If you need the deflection board go to the following link they have one.
http://servicemanuals.vstore.ca/

Posted on Jun 16, 2008

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1 Answer

Subwoofer deconnects


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I’m having a problem with my Toshiba 42HL196. Once or twice the red LED was flashing and I held the power button in for a bit and it started working again. Today I was having cable installed and after a...


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
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http://electronicshelponline.blogspot.com/
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HI, my JVC AV-48wp30 has the same symptoms as other posts here. Powers on with no screen, HV, and no CRT heater coils light up. Thumping sound in speakers, and then shuts off. Blue light flashes. ...


take off the front panel and unplug the convergance board up front just behinf panel if the set now comes on replace your con amps if not you have a power supply issue more than likly the con amps are bad

Nov 20, 2009 | JVC AV-48WP30 48" Rear Projection...

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Apr 04, 2008 | Televison & Video

1 Answer

Blue light flashes


it is most likely the convergence panel. do your speakers make a thumping sound? if not, disregard this solution. change the stk392-110 convergence amps located behind the front cover on the convergence board. also check the resistors, it seems like they always take out two or more resistors. make sure all of your solder connections are good and none of them are touching. also, when you get the set back on you will need to manually adjust the convergence from the menu. you will need the factory remote. if you find bad resistors, the values are on them, but if you need the values and wattage, then use this page:

http://home.comcast.net/~dande76530/ConvergenceOutSchematiics.pdf

hope this helps you.

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Haier 27 inch Flat screen TV I think power problem


hi

this probleam is with either

EHT SPARKING
SMPS NOT GETTING ON
HORIZONTAL OUT PUT TRANSISTOR WAS SHORT REPLACE IT WITH SAME SPECIFICATION.


THANK YOU

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1 Answer

JVC AV-48WP30 will not give a picture


Replace the convergence IC`s again using original Sanyo chips (STK 392-110 or STK 392-180). Make sure to use plenty of heat sink compound. Coat the entire back side of the chips. Also look to see if any of the low ohm resistors are burned. A shorted chip will cause the thumping sound and the set will shutdown. I am guessing that you used generic IC`s as a replacement. They are cheap and the leggs fall off when you apply too much heat during soldering. Dont wory about the CRT driver or the deflection board, they are probably fine.

Dec 12, 2007 | JVC AV-48WP30 48" Rear Projection...

1 Answer

No responce except thumping noise


PLEASE TRY TO CHANGE AGAIN THE CONVERGANCE IC'S

Oct 02, 2007 | JVC AV-48WP30 48" Rear Projection...

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