Question about Mitsubishi WS-65809 65" Rear Projection Television
Posted by Anonymous on
This set has a problem in the horizontal sweep circuit or in the main power supply. Most likely a failed component, and the set shut down to protect the rest of the circuit. If you know how to read a schematic diagram and how the circuits operate, then you will need a good multimeter and an ESR type capacitor checker to find out the short in this set. Sometimes the CRTs(Picture Tubes) will leak the coolent fluid out and onto the printed circuit boards. Also sometimes the convergence IC's can cause this problem, but if that is the case the small little pico fuses will pop also. If you have had no solid state or printed circuit repair experience, play it safe and call in a trained tech. Good Luck
Posted on Mar 17, 2007
error code 22 is a short protect circuit. this means the tv has found a
problem in the tv and will not let it turn on till fixed. this could
be several different circuits in the tv that is causing this. we need
to test some parts to see what this is. the most common is a shorted
convergence circuit. a repair on this would range around 400.00. You should check using a multimeter and also you should be good at soldering
PS:I strongly advice if you don't have experience in electronics then better leave this job to a tech
Posted on Feb 17, 2008
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.
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.
Posted on Oct 10, 2009
Testimonial: "Lots of information. Great knowledge on the topic."
2,2 error code is short protection---98% of the time it means one of the two soldered in pico fuses this set uses is blown----there are several---but your problem means if it is ws-65809 one of the two stk-392-570 convergence chips has failed.
I will attach a photo---they are on the middle circuit board and the two to the right are for convergence--both are green and 5 amp--with the set unplugged check both of them like any fuse--no reading means bad.
If you find this--I HAVE START TO FINISH, STEP BY STEP INSTRUCTIONS FOR THIS REPAIR IN THIS SET--SHOPS WILL GET 300 or more but you if you can do it yourself buy everything you need for under 40 dollars--I can tell you the best place to get the chips, fuses, etc.
If you want the instructions let me know and I will post them here for you---they are based on my own actual experience doing this repair in this kind of set hundreds of times.
If this information helped you rate this solution as I do this here for free.
Here is a photo of what the two chips look like--The one in the picture says 392-560 but yours uses two that look just like it--STK-392-570.
Posted on Dec 28, 2009
Testimonial: "SDTECH provided me the information I've been seeking for the past 2 years, and he did it the same day as I posted the problem. YEA!!!!!!!"
I know these sets very well and have posted instructions here for the chip replacement many times.
If you really need help I am in California and will be online noon until 11 pm tomorrow- (Pacific time) if you really want help post a question in the Premium section here attention SD TECH and I will help you more.
Posted on Jan 29, 2010
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