Question about Mitsubishi WS-65809 65" Rear Projection Television

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Ws-65809 no high voltage

No picture, but sound is ok. two pictures tube are glowing, the third one is not.

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HI INMARK66-THATS FUNNY I HAVE THE SAME MODEL BUT MY PICTURE TUBS ARE ALL GLOWING I HAVE SOUND BUT NO PICTURE EITHER.????DO U STILL HAVE PROBLEMS WITH THIS TV???IF NOT LET ME KNOW WHAT U DID TO IT???LOOKS LIKE U POSTED THIS AWHILE AGO??THANKS GLENN

Posted on Sep 16, 2008

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1 Answer

Sound ok but no picture


Check the high voltage on the picture tube it should be around 26 thousand volts. Check the back of the picture tube to see if its lit.

Rich

Feb 04, 2015 | Televison & Video

1 Answer

Why do we have sound but no picture?


This is an older picture-tube projection TV.
There are just a few things that can affect all three color tubes at the same time. One of these is "Blanking" and the other is the High Voltage.

Blanking happens when there is not a good signal to the TV, and the high voltage and therefore picture are shut off to protect the high voltage system. Make sure there is a good, strong signal to test it from, like a DVD player, otherwise the TV could blank off from low signal levels. A signal good enough to produce sound may not be good enough to keep the picture on, so that is not a good indication of good signal.

The other, High Voltage, is complicated and dangerous to work on and best left to a qualified technician to work on. High voltage in a TV can hurt or even kill you if you get across it.

Jul 06, 2014 | Mitsubishi WS-55313 55" Rear Projection...

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2 blink-then 1 blink-------X-ray protection


You have two of these or one set with different problems, If you got this error the set will of course not come on and stay on.

This like some error codes is general in nature---set produces over 20,000 volts to fire the three picture tubes, hence high voltage.

If the High voltage goes above a certain point the latch or shutdown circuit detects this and shuts the set down to prevent X-Ray radiation which happens if the picture tubes receive excessive High voltage--straightforward and needed, locating the part is almost certainly a shop repair.

I would on this model suggest removing power from the set which clears the errors detected and stored and then power up and try to turn set on again---when it fails check for the error code with the self check again

Dec 06, 2012 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

I have 20 inches tv there is a sound but no picture,it so dark picture


Since you say dark picture visible, then : Brightness control setting!

Check the resistors on the neck PCB. If you find the resistance value of these resistors high, replace them.

If No EHT is found then also there won't be a picture visibility.

1. Open the back cover and see whether you can observe a faint filament glow in the picture tube neck, close to the picture tube socket.
If there is no glow E H T circuit failure.

2. If the glow is observed check picture tube grid voltages grid no. 2. as said above.

( the points referred above are all for technical people)

Oct 15, 2010 | Televison & Video

1 Answer

Sony trinitron television , when you turn on it takes awhile for the picture to come up on screen and when it does the screen constantly blinks


Three possibilities
First it sounds like your Tube EHT ( Extra High Tension) power supply is failing.
CRT TVs need a high voltage around 30K for the tube to work. Whcih is generated in the set, if you hear clicking sound like arcking this will confirm it. Unless you are familiar with HV electronics you should not attempt to fix it since it can be dangerous.
Second possibility is the picture tube is failing.
Third possibility is there is some problem with the video circuits, to check this try connecting a VCR or a DVD to see if the picture is OK. If it is, the problem is in the video circuits.

Feb 15, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

The TV will work for a while and then the picture will get lines in it and then the tv will shut itself off.


This Is IK shutdown, this may be from a bad picture tube going bad, or excessive high voltage, If the screen turns a certain color right before shut down then thats the tube going bad, It will either be RED/GRN/BLU screen right before shutdown, the lines are scan lines. If a tube needs replacing then it might be hard to get as CRT manufactures are not making many any more. You can contact http://www.VDC.com for used or remanufactured one.

Dec 09, 2009 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Mitsubishi WS-65809 - works, but screen won't power on.


yes that is correct 12 is normal...make sure all connectors are plugged in and in the correct places . conectors should be marked with letters that match the marking on the circuit board. Then look for heaters , in the glass bottom of the picture tubes(CRTs) there should be a little orange glow visable though the neck of the CRTs just above where the crt boards plugg onto the bottom. if the heaters are not glowing then check your wires to the crt boards again , you probly tugged one of them too hard during disassembly also check for cracked solder in the heater circuit......Oh yeah, you didn't mention -Does the TV get high voltage ??? thats important to having a picture......If you see the heaters glowing when the tv is on then look down into the lenses of the crts . If you see a brite color horizontal line closer to one side in each of them then you know most of the tv is working. If that line is curved then the tv probly detects that the convergence circuit is not working and it is blanking video.
OR -----
the error is 21 (see what number it ends the sequence with..) . Error 21 is X_Ray protect and you probly plugged one of the connectors into the diagnosic connector(near the high voltage transformer- normally nothing goes there) . If that is the case then somthing in the H.V. circuit could have been permanently damaged and now the tv has a new problem and wont work even if you put that connector in the right place.

Oct 09, 2009 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

I heard sound but not video see it and i unplugged and push the power button x one minute and it doesn't work either


you have a problem with signal or voltages tht goes to 3 proyection tubes ,are you tech?? if yes used a voltmeter to check voltages to high voltage horizontal power , you have problem with deflection area or maybe power supply

Jul 08, 2009 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

MITSIBUSHI WS65809 TV


Good Day, GLENN;
I assume that IHVT was arcing from the side, and the audio is from the TV and not stereo? Or was it the high voltage splitter? Was it plug in or soldered IN? It sounds like you may have bridged a solder joint, unplugged something by accident or something else? Double check your work first of all. Do you still get high voltage? You may poor part. Good Luck, big IRISH.

Sep 13, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Sound no picture


OK CHECK THE HIGH VOLTAGE REGION, FLYBACK AND TRIPLICATOR UNITS. CHECK OPEN RESISTOR IN CRT FOR ALL TUBES AND ISOLATION HIGH VOLTAGE CABLES IN EACH TUBES.

Dec 27, 2006 | Sony KP-53S25 53" Rear Projection...

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