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

1 Answer

Blue power light constantly on...

So the blue convergence was going out on the tv, I powered it off, and the next time I tried to turn it on the blue power light was constantly on and when the power button was pushed, the tv didnt turn on, didnt do anything. I didnt mess with it in between these two seperate problems. I took out the convergence board (power unplugged, and from the front of the unit) and replaced the 110's with 150's, a local repair shop did the replacing. I put it back in the tv...and the same problem: blue power light constantly on, no response from pushing the power button. I unplugged the convergence board to see if that was the problem and tried powering it on again...and again, nothing. Whats going on here?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 150 Answers
Re: Blue power light constantly on... - JVC AV-48WP30 48" Rear Projection Television Projection Televisions

Possibly shorted crt drive ic on crt board.

Posted on Jul 11, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

The blue lines on the left lower side of the tv will not converge. The tv has never given me a problem. I woke up one morning and powered it on and noticed the blue is misaligned. I tried converging and...

This problems can happen to the DLP tv any times of it tv life.Tv is 100% have a convergence problems.The 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Dec 03, 2010 | Pioneer SD-643HD5 64" Rear Projection...

4 Answers

Shuts off then flashes power light

I think this is a power problem, check the power supply for bulging or leaking electrolytic capacitors or other damaged components.

Jul 20, 2008 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

Blue and yellow convergence? problem...power light blinks 6 times

This is a common problem. Its called a convergence failure. You can get all the parts from


  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted

You can see some examples and find a fix here...

Jan 28, 2010 | Sony KP-51WS510 51" Rear Projection...

1 Answer

ICs + resistors swapped= blue power light auto on clicking noise

Unplug the power to the convergence board. If it turns on, you still have a problem in the convergence circuit.

Dec 16, 2009 | JVC AV-56P575 56" Rear Projection...

1 Answer

I have a Sony kp53xbr35 rp tv, the problem is that i turn it on the lights begin to turn on. the screen turns blue to blue green then red and the tv shuts off. i can still get sound but no picture. the...

Projection sets have two very common problems outlined below.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. The TV can also shut down when the convergence starts to fail.

Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith, RCA and others.

You can get more information and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture


You can see some more examples and find a fix using this link on Fixya

Nov 16, 2009 | Sony KP-53XBR45 53" Rear Projection...

2 Answers


Your tv might have a defective power supply, and/or convergence circuit. The initial cause of the problem, if it is the convergence circuit, is usualy a loose conection on one or two jumpers close to the convergence output circuits (STK392-1110), in with case this chips might need to be replaced and a pico fuse of 5A on the power supply too. I hope this help you.

Sep 24, 2009 | Toshiba 56H80 56" Rear Projection...

1 Answer

PT-47WX53G wont turn on 3 blinking lights from the power area.

If the red power LED is blinking 3 times--it is most likely a shorted convergence IC---the only way you can be sure is to remove the light box--I can tell you how by email--and unsolder the two STK-392-110 ic chips----they are on two heat sinks made of aluminum next to each other; if you open the back cover and find them you will see about a dozen blue(light blue) resistors marked 2.2 ohm----if any of those are some what white in the middle(discolored) they are gone and the set will never adjust until you replace them and the two convergence IC chips---What I usually do in this case is remove the light box and unsolder both IC chips and plug it in and turn it on---if the set now comes on and stays on--I replace the IC chips and adjust the set---I have done hundreds of these sets---3 blinks is almost always a bad convergence IC--if this was helpful give me a vote---AND IF YOU NEED DIRECT ASSISTANCE contact me at:

San Diego tech

Aug 13, 2009 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Red,Blue,Green Image

YOu have convergence issues. Ok first question. IN your setup menu do you have the convergence option/ if you DO not then it can be a specail fusable link. fl231 if you do. next question do the picture bow in at the middle. if you do then it possibly a convergence power supply issue. next if you go into setup convergence does the crosshairs adjust up or down left to right on both blue and red. I if so then theres is a chance that it can be a convergence adjusment or a amplifer problem AS always THIS SET CAN GENERATE LEATHAL 380 VOLTS EVEN WITH SET UPLUGED SO BE CAREFULL.

Jun 20, 2008 | RCA HD52W59 HDTV Projection Television

1 Answer

Tv repair

My Tv was doing the same thing, and I had to unplug the set in order to get rid of the blinking light. And what i did was to turn the power on and as soon as i saw the picture i turned it off, I did this 5 times and on the 6th time I let it power and tv stayed on, however something did happend to my set, i found that my convergence was wacky. Tried to center convergence but i could not center the blue. Turns out, i think the problem is with my Convergence ICs that went bad. I can still watch tv but the Image has blue color shadows and the picture slightly bows inwards from top and bottom. To sum this up, i will need to replace 2 ICs, IC C5AA00000203, and this should fix my problem. I will do this repair myself, each part is about $41..

Let me know what happened to your problem.

Dec 01, 2007 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Seemed to Fix Convergence problem; Now TV power doesnt work.

You need to check first for solder splashes or bridges created when the new Ic's were installed,the next thing to check is a disconected conector or might not in place fully and then check for loose conections in the main board,all that movement might have loosen something more than before,check the horizontal driver transformer,the horizontal output transistor.Be careful

Oct 02, 2006 | JVC AV-48WP74 48" Rear Projection...

Not finding what you are looking for?
JVC AV-48WP30 48" Rear Projection Television Logo

Related Topics:

65 people viewed this question

Ask a Question

Usually answered in minutes!

Top JVC Projection Televisions Experts

easy alberta
easy alberta

Level 2 Expert

132 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

The Knight
The Knight

Level 3 Expert

66623 Answers

Are you a JVC Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides