Question about Mitsubishi WS-65315 65" Rear Projection HDTV-Ready Television

1 Answer

Can´t get convergence right

First I thoug.the STK´S and I changed but nothing still the same. in the service mode.I try to change the values,but no responce.

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  • alvaro martinez May 12, 2008

    thanks,larry.I´m checking the heat sinks and they´re warm.so I´ll check the power supply.and then the yokes.do you think thats the reason. why I can´t move the manual aligment in the service mode?



    thank you. from mexico city.

  • alvaro martinez May 13, 2008

    I´ ll replace it if I find it,let you know what hapened

    thanks crazylarry.

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Feel the heat sinks and notice if both or all STK's are running warm but not hot . if cold you lost a power supply. If one very hot, caps and resistors off value or even shorted yoke windings.

Posted on May 12, 2008

  • larry hanson
    larry hanson May 13, 2008

    no, the yokes would make the stks run hot and picture would severely distort on one color or more, if warm they seem fine and getting power , just make sure your yokes are plugged up.
    I seen allot of convergence microprocessors bad in mitsubishi.

    I mean loosing all 3 color controls (red blue green) and stks are getting juice.... points me at the Micro on the Conv. board.

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I replaced the STK chips and 3 fuses per the research I did on the convergence and blinking red light problem. Plugged all back in and had convergence issues and hor - vert was off so I tried to adjust...


Make sure you didn't bridge anything, knock anything off the deflection board you shouldn't have. All the resistor values on both sides of the STK match up, and most importantly Labeled all your plugs properly and placed them in the right spot, because if they are switched, you'll get a convergence issue. Make sure the fuses are still good too and that all the terminals that all the plugs go into have good solder joints.
Also, there is a voltage divider.
Make sure that none of the wires got loosened when you pulled this plug. (Particularly the ground wire) Let me know!

Jun 24, 2011 | Toshiba 53H71 53 in. Rear Projection...

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Hitiachi Convergence Circuit Resistor Values


This site has been very helpful in diagnosing and repairing my Hitachi 57XWX20B. I recently changed the IC's and a resistor to fixe a convergence problem and had to use the small button on the convergence circuit to get set to return from static mode and enter dynamic mode. I searched everywhere trying to locate the correct resistor values and noticed many other's needing the same information. Here are the results of my research. I obtained some from manuals and others from comparison of the different models. My main focus was finding the values for the 57XWX20B. The resistor values are given in ohms at 1 watt. This means RK42 is a 3.3 OHM 1 watt resistor. RK58 was the problem in my set. It was giving a value of 2.3 and needed to be 4.7. I first replaced the IC's and thought the resistors were all good, but I later noticed my convergence was off. I could manually align it but the magic focus initiation would not save. It gave an overflow error. I bought the sanyo brand of IC's, not the cheap inports and found that if you use a desoldering wick then the repair is easy. The new IC's restored the beautiful color the set had when new. Now it is brilliant as well as converged. My repair cost was:
STK-110 13.00 Bought from local electronic supplier
STK-150 15.00
RK58 3.00 Bought from a local TV repair shop

The elecronic supply store gave me 6 inches of desouldering wick
Total cost: 31.00 Dollars

51UWX20B DP23
57UWX20B DP23
51GWX20B DP23G
57GWX20B DP23G
43FWX20B DP24
51XWX20B DP23
57XWX20B DP23
51SWX20B DP27
57SWX20B DP27
65SWX20B DP27
57TWX20B DP27D
65TWX20B DP27D

DP 23 DP 24 DP 27 RK42 3.3 3.3 3.9 RK46 2.2 1.8 1.8 RK50 2.7 3.3 2.7 RK54 1.8 1.8 1.8 RK58 4.7 4.7 4.7 RK62 2.7 2.2 2.2

on Apr 02, 2008 | Hitachi 57SWX20B 57" Rear Projection...

1 Answer

Double Vision ...w/waves on top/bottom too much green.


1024x768 Normal 0 Convergence


When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

calgaryconvergencerepair.weebly.com/convergence-explanation.html

Good Luck,

Easyab

Jun 05, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Panasonic PT-51HX40B convergence issue


Hi.....
Bit of a long shot but have you tried this??
http://oreilly.com/catalog/htheaterhks/chapter/hack12.pdf

Hope it helps!
Richard

Apr 28, 2008 | Televison & Video

2 Answers

Philips 43pp92 blue will not converge


STK392-120 is convergence correction amplifier.. the problem is the convergence circuit... try to check the small Valuie electrolytic capacitors or High value resistors! maybe the said parts is in change Value... used a ohmmeter tester to find the chenge value parts!.

Nov 05, 2007 | Philips 43PP9202 43" Rear Projection...

1 Answer

Service mode for convergence


You enter the service menu by using the remote. Press DISPLAY, 5, VOL+, POWER in rapid succession. Once the screen appears, you should notice green letters and numbers at the top of the screen. Your remote acts as a navigation tool to allow you to select and change values. Keys 1 and 4 change the Item, keys 2 and 5 change the Category, and keys 3 and 6 change the Value. MUTE enters the write function, and ENTER executes it. Power exits the service menu. Keep in mind that while in the convergence mode, the keys have different functions, which we'll get to in due time. The service manual will also have this information.
http://tv.groups.yahoo.com/group/Ws500/

Feb 16, 2008 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Color convergence


find the change value capacitors and resistors in the convergence section!

Oct 08, 2007 | Toshiba TP50G60 50" Rear Projection...

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