Question about JVC AV-56WP30 56" Rear Projection Television

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HDMI dead After replacing stk chip set is great but HDMI is dead. How do I reset unit?

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I hope you are aware that JVC booby-traped the DVI modue in this set to avoid
tampering. If you remove the back without taking precautions say bye to your digital
input. See:http://www.iwaynet.net/~nesda/Jan04/Jan0413.html

Steve
Yeah, I've read that. I haven't taken the back off, but I bought it
second-hand, so it could have been serviced in the past. However, there
is a way to reset the HDMI module from within the service menu (you do a
self-check, then turn off the tv from within the menu and unplug for 30
seconds, according to a few forums I've read). However, I don't know
how to get into this service menu.

Thats not what I was told by JVC, but if you think it will fix it give it a try;

SERVICE MENU setting
a) Press [SLEEP TIMER] key and, while the indication of
SLEEP TIMER 0 MIN is being displayed, press
[DISPLAY] key and [VIDEO STATUS] key on the
remote control unit (Fig.2) simultaneously.
b) The SERVICE MENU screen of Fig.1 is displayed.
c) Verify what to set in the SERVICE MENU, and set
whatever is necessary

Be very careful NOT to change any settings if you don't want to create a boat anchor. Quoted from a diff. thread from tech-archives.net

Posted on Dec 04, 2008

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Sony model #kp51ws500. Common problems for screen appearing warped


Need more details about how the screen is appearing warped.

if you have color separation and distorted image (warped,bowed, etc), then your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.


Note: The STK chips are black about 3 inches long and will be mounted against a large aluminum heat sink (metal fins). They have about 20 pins on them. I believe they are STK392-560s in that set.

Feb 25, 2011 | Sony KP-51WS500 51" Rear Projection...

1 Answer

When my 65 inch Mitsubishi tv is on for about 10 minutes the colors get al blury and almost looks like 3D without the glasses.It is nine years old Model number WS-65819.It doesn't clear up


Your Convergence ICs are likely failing or it is a bad solder joint related to that area. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. There may only be one STK chip in this set. If there are two, they will be right next to each other.


Feb 20, 2011 | Mitsubishi WS-55819 55" Rear Projection...

1 Answer

I have a mitusbishi ws-a65 hd 1080 tv. im having trouble getting the picture to line up with the shodows, its showing double, how can i fix this?


Your Convergence ICs have likely failed. It is very common on rear projections. Replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu.


Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option to align the red and blue colors

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. There may only be one STK chip in this set. If there are two, they will be right next to each other.

Feb 20, 2011 | Mitsubishi Televison & Video

1 Answer

At times the screen becomes double


When you say "double" do you mean you see the colors somewhat seperated or see maybe blue or red outlines around objects? Does the screen distort?

If so then:
Your Convergence ICs are likely failing or it is a bad solder joint related to that area. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. There may only be one STK chip in this set. If there are two, they will be right next to each other.

Feb 20, 2011 | Mitsubishi WS-55857 55" Rear Projection...

2 Answers

The tv looks like it is in 3d. when i try to adjust the convergiance the plus signs on the left are bent


do not play with this tv replace the stk ic chips and the resistors around the stk chips ,cant miss em about 2 inches big with heat sinks on them.

Sep 11, 2010 | JVC AV-48WP30 48" Rear Projection...

3 Answers

Bottom 4 inches of my mitsubishi 65" rear projection tv is distorted. it seems like the colors aren't correct in this area. the rest of the picture is great. Justin


LOOK AT ATTACHED PHOTOS AND TELL ME IF THEY LOOK FAMILIAR.

THE MODEL INDICATED USES TWO of the STK-392-570 CONVERGENCE CHIPS.

I have step by step, start to finish instructions for this repair in this set. It involves getting the middle circuit board out of the set and replacing the two chips.

Total parts cost on EBAY WILL BE UNDER 25 DOLLARS AND repair takes on average about a hour--I have done hundreds of these sets and if you are doing it for the first time it may take longer.

The instructions tell you everything you will need and how to do the repair from start to finish and they are free.

If the information helped you, rate this solution as "very helpful: as I do this here for free.

If you want the instructions let me know and I will post them here for you for free. I will assist you from start to finish if you attempt the repair.

REGARDS, SD TECH


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NO TWO SETS WILL LOOK EXACTLY THE SAME BUT YOU SHOULD KNOW IF WHAT THESE PICTURES SHOW IS YOUR PROBLEM.

Aug 11, 2010 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Stk392-110 chip is in my tv. can I use stk392-150 instead?


The model number you indicated: WS-55809 does not use the STK-392-110--IT USES TWO STK-392-570 CHIPS.

IF WHATEVER SET YOU HAVE USES A STK-392-110 YOU CAN USE THE STK-392-150 TO REPLACE IT--it is a higher current device than the 110 chip---there are some others even stouter but some create more problems.

I have used the 150 chip on several sets for the 110.


If this information helps you rate this solution as I do this here for FREE.

SD TECH.

Nov 14, 2009 | Mitsubishi WS-55809 55" Rear Projection...

2 Answers

Picture in out of alignment when hdmi on looks like a 3d movi



You have a convergence problem. Here are some of the most common symptoms.
 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem. 

>>>Solution<<<< 

You need to replace the convergence chips and convergence resistors. 

Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 

Jan 02, 2009 | Sony KP-65WS510 65" Rear Projection...

2 Answers

Samsung SP42Q2HD standby fault


tha convergence /def. board is faulty,change as a unit.

Dec 13, 2007 | Samsung HCN436W 43" Rear Projection...

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...

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