Top 20 JVC AV-56WP74 56" Rear Projection HDTV-Ready Television Questions & Answers

I can't be sure, but it may mean "warming up now, please wait".

JVC AV-56WP74... | 146 views | 0 helpful votes

it sounds like u need a new lamp with housing if that dont work than its your main board on the inside of tv. but i would try the lamp first

JVC AV-56WP74... | 110 views | 0 helpful votes

It sounds that the convergence adjustments should be re-touched. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.

JVC AV-56WP74... | 160 views | 1 helpful votes

Most likely the two stk-392-110 convergence chips are bad and need replacing, several sites sell kits for this.

JVC AV-56WP74... | 59 views | 0 helpful votes

Convergence is most likely for this model------that circuit in this set is right at front behind grill below the screen.

If you can solder it is a do it yourself type repair with parts under 30 dollars (most shops get 250 average parts and labor) and I can tell you how to get that board out and what is needed.

Here is the board removed from a set.

JVC AV-56WP74... | 85 views | 0 helpful votes

you can try to adjust the horizontal position

JVC AV-56WP74... | 64 views | 0 helpful votes

My answer is based on the model number here-AV-56WP74 or similar--blue light blinking is shutdown to protect the power supply in the set.

A few questions you could answer:

before this happened was screen red (too much) or had colors skewed or a little 3d looking?

The most common issue on this set if that is convergence and it can easily escalate to where it shuts the set down and blue blinks constant.

There is a simple way to confirm or deny that issue--Got someone willing to try that? Set will be unplugged and entire front grill under screen removed to try it(I can tell you how and what to do)

If no skill at all--consult a shop--if want I will answer questions or comments you post on this page--(add a comment button)


JVC AV-56WP74... | 80 views | 0 helpful votes

The tubes rarely fail in this model so it may be a convergence issue instead. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed.

Here is an example video

JVC AV-56WP74... | 86 views | 0 helpful votes

<object width="640" height="360"><param name="movie" value=""></param><param name="allowFullScreen" value="true"></param><param name="allowScriptAccess" value="always"></param><embed src="" type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="640" height="360"></embed></object>

JVC AV-56WP74... | 99 views | 0 helpful votes

U have all the tools,also u can do basic soldering work like take out ICS and putting back in ICS chips on a electronic circuit board and take out small electronic components parts and replaces all those small dead components parts resoldering it back on to a circuit board?Yes?Tries websites like, to buy a whole complete convergence kit will also included a DVD tutoring disc belonging to ur DLP tv make and model u are buying will cost u like $70.U do the labors to fix it ur self.Or the tvs shops will cost u like $300-350 for parts and labors.

JVC AV-56WP74... | 175 views | 2 helpful votes

Convergence issue, if you cannot fix it by convergence adjustment, is un-doubtedly due to malfunctioning STK amplifier ICs. There are two of them that need to be replaced . They are located behind large aluminium heatsinks as shown in the image below.
The ICs can be purchased on ebay by using the IC numbers in your set as search keyword. You will have de-solder the old ones, apply silicon based thermal grease to the replacements and solder them into the board. Note that you have to make sure that they are making good contact with the heatsink when you replace them. You will also need to test and replace any resistors that the ICs may have taken out when they have gone bad. I hope you know how to use a multimeter(or ohm-meter) and can read resistor color codes. color code chart/Live4soccer7/360fullres/resistor_color_code_chart.jpg
If there is any thing else you would like to know, please let me know.
PS: Bad rating = No further help

JVC AV-56WP74... | 52 views | 0 helpful votes

if model number is correct the two stk-392-110 chips need to be replaced.

Can you solder?

see photos of board in your set and I can tell you how to get it out and what is needed.

Before you rate this information let me know if you can solder etc.

sd techsd_tech_66.jpg


JVC AV-56WP74... | 168 views | 0 helpful votes

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from and do the repair yourself. Its a fairly easy DIY fix.

JVC AV-56WP74... | 112 views | 0 helpful votes

This is whats called a convergence failure. You will need to call in a repair shop or goto sites like hthat ave the parts to fix this yourself. Its a common failure on projection TV sets.

JVC AV-56WP74... | 79 views | 0 helpful votes

You can get it repaired. Its maybe a resistor/s thats losing its value and needs to be replaced.
You can locate this on the mother board close to the or near to the Fly-back transformer section.
Good luck.


JVC AV-56WP74... | 74 views | 0 helpful votes

If the red line looks like a swoosh of red across the screen it may be the convergence Ic having an issue.

JVC AV-56WP74... | 142 views | 0 helpful votes

See my tip at for help with your problem.

Thanks for using FixYa and for the great rating.


JVC AV-56WP74... | 42 views | 0 helpful votes

Around $300 for a good condition one.

JVC AV-56WP74... | 23 views | 0 helpful votes

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