I have a Mitsubishi VS-45VA2. The sound is great, but I can't get a picture. I took the back off to check fuses but none appear to be bad. It was very dusty and I cleaned it out as best as I could. There appear to be no burn marks from bad components. What is my next step?
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Re: sound but no picture on a Mitsubishi VS-45VA2.
This is the VZ1 Chassis.. CHECK FOR 1200 VDC AT PIN 1 OF CONNECTOR "DK". IF LOW OR MISSING CHECK R5D9 100 OHM 1/2 OFF PIN 1 OF THE FLYBACK ON THE MAIN PCB. 2. CHECK IC401 PIN 8 FOR 28 VDC IF MISSING CHECK R510 1.2 OHM 1/2 W OFF PIN 5 OF THE FLYBACK. IF OPEN IC401 PART # 272P239 If those voltages check out let me know and we will go to the next level. Two other questions do you have video through the pip with the alternate input? and do you have on screen display when you push menu on the remote?
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Well, today may be your lucky day. This is a 200.00 repair at least, but I'll attempt to help you for free. Most commonly on this set the pip module fails. This is a small standup board mounted on the signal pcb. There are 2 plugs that connect it to the signal board. These plugs are VS and VA. First, Disconnect the power to the tv and remove either the front or rear cover. Use good lighting. Disconnect small standup board from signal pcb using a small screwdriver to undo the two clips at VA and VS connectors. Pins of the VA connector are marked on the board so you can tell which one is pin 1 through 11. Simply jump a small wire from pin 5 to pin 11 and a small wire from pin 7 to pin 9. Make sure the wires do not touch and this will bypass the pip module for testing. With pip module removed and 2 jumpers installed plug set in and turn on. The set should now show a picture but the pip will no longer work. Hope this helps. Good luck, Russmann.
Odds are real good that the solder connections on the deflection yokes are bad. Go through the front access panel and with a small mirror look and the back side of the connector on each yoke. The top two pins of each will probably show 'ringed' solder connections.
Vertical circuit problem. VERY common on Mitsubishi sets for past 30 years. The capacitors are getting weak. Have it checked out, aslong as the picture was good and clear before the problem. That just means the tubes are still O.K. Mitsubishi's ALL have bad capacitors all over them. Been like that for ever. If you wait too long, the caps will leak onto the circuit board and "eat" the circuit traces. It should be checked ALL over for bad caps and then have the convergance chips replaced with original sanyo made replacements.Very inportant! Take the time to find a good repairshop in your area. Talk to other people to see who they use. You're talking about $400.00 to do everything, but it will last for years after that. If you like the set, it's worth it. Just be honest to your-self when evaluating the quaility of picture you had and get a good repair shop. That's the best advise I can give you. Good-Luck.
From the symptoms you describe, it seems the high voltage
flyback autotransformer has failed along with the horizontal amplifier (they
are slaved to each other). The sound comes from the flyback unit.
Well, the only way to solve this is to get a technician take a look at the set,
I'm afraid. Repairs could cost upto $100 or more, depending upon the number of
components that need to be replaced,
Hope that helps!
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