Question about Mitsubishi WS-65807 65" Rear Projection Television

1 Answer

Dont remember who

Hey just a quick thank you for your help
this is dannek
i got the stks on line installed them and i dont know much about t.v
anyway did the repair myself and

now it really works great better than when i bought it brand new
picture is so crisp & clear
now i can actully read disclaimers on the bottom of screen
what a big diff the boards made

thank you again dann

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Its a repair that we like to help people by letting them know that they can save about 500.00 doing the repair themselves. Congratulations on doing a good job.

Posted on May 22, 2008

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1 Answer

My 61" Hitachi UltraVision has


hello my name is rico, you have bad convergence problem. you need to replace the stks inside the tv, and look for colder on the boards. you gonna need a gun solder, solder, chawick, 2 stks(look in the tv for the number loooks like stk392-120 o something like it) look for bad fuses. that should fix your problem. if you need more help let me know at 602-810-7149.

Jan 07, 2011 | Hitachi 61SDX01B 61" Rear Projection...

1 Answer

Have double image can't get line convergence to work don't have a password


you dont need a password, you need to replace the stks inside the tv and check bad fuses. that should fix your problem. if you need more help please feel free tro call me at anytime 602-810-7149.

Dec 31, 2010 | Mitsubishi Televison & Video

1 Answer

Panasonic pt53wx53g wheres pico fuse


R7080 is mounted parallel with Transistor Q7060 (base-emitter) supplying +20 volts to STKs
R7086 is mounted parallel with Transistor Q7061 (base-emitter) supplying -20 volts to STKs

Feb 27, 2009 | Panasonic Televison & Video

1 Answer

Hitachi 53" projection (53UDX10B) line across screen


Replace STKS also it is a 6 hour job if you have to do a complete realinement of convergence so do not clear DCU ram module.

Nov 27, 2008 | Hitachi 53UDX10B 53" Rear Projection...

2 Answers

Blurry.....convergence problem???


Hello,


This denotes a convergence problem as you surmised. Believe it or not it would be cheaper for you to replace the two convergence amplifiers and the biasing resistors. You would not actually be replacing the convergence board since these devices are usually located on the deflection board in most cases. However in answer to your question, the boards are easily removed, depending on your level of patience (lots of cables to move around), I would also advise you to either mark down all of the connection you will remove, or take pictures of the board and its connectors. If you choose to just replace the Amplifiers and the biasing resistors there is a lot of information on this site on how to do so: This will get you started:

1) Unplug the TV and then get a schematic of the TV I use http://www.servicemanuals.net or http://www.manualsparadise.com
2) On the schematic locate the STK392-xxx series IC packs (usually attached to a large heat sink)
3) determine if the STK392s are 110, 120 or 150.
4) if the STK392-xxx's are 110s replace with 110s (forget that upgrade stuff it is a hit or miss game that I don't believe you want to get into), if they are 120s replace with 120s and so on.
5)Now to replace the STKs: remove the module from the TV and unsolder theold STKs along with the bias resistors, and replace them with the newones (be sure to apply heat sink paste to the STKs when attaching themto the heatsink)
6) make sure there are no short circuits form your soldering job.
7) Reinstall the module and then turn on the TV.
8) do an auto-convergence test and then things should be back to normal.

Now if you think you can do this have at it, if not I would suggest that you have it done by a qualified TV technician.

Nov 02, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Hc-p4752 black screen when powered on.


glad i could help ...now the black screen .. remove the back turn it on and look at the actual tubes
the base of the tubes should have a reddish glow if not the set isnt fully on look at the top of the tube if its on you should see a box or a dot etc
if both conditions above are true then you have damaged the stks you will need to replace them again
you can order from here $7.99 each http://www.electronix.com
remember to solder carefully stks do not take shorts well
if you dont see anything in the tubes you may have damaged the regulator too if you have a multimeter handy (and you know how to use it)while the set is running check (pins 15,18) for +28 volts {pins 16 ,17 and 19} for -28 volts if you dont get around those voltages you will be replacing the regulator too its probably an str (something or other) look around where the power cord plugs in for a big transistor looking thing..
good luck


Sep 21, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

More on signal board jumpers


I will try my best to explain.....hard wires connect two circuit
traces together and are not in parallel with any component.They are used where a component is not needed.....however, the 16v
supplies must travel from the main board where the F850 &F851 fuses are to the signal board where the STK's are....after the two B+ volts pass thru the two PCB edge connectors,typically on an "H" line Toshiba en route to the STK current limiting resistors there are hard wire jumpers with NUMBER locations marked on the PCB.Just " Follow the path the voltages take" & solder all connects.......
Next thought = What brand / quality / price were your new,replacement IC's ?? = Toshiba,Sanyo or.....Chinese junk?
..........................T.

Aug 21, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer

Tv wouldn't turn on, unplugged convergence board, turned on, replaced STKs, still have convergence problem


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. 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 and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*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

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Feb 07, 2008 | Samsung HCM4215W 42" Rear Projection...

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