Question about Mitsubishi VS-45607 45" Rear Projection Television
Mitsubishi VS 5004R rear projection TV. It takes many attempts with the remote or from the power button of the set for the tv to turn on. I can here a relay click each time the power button is depressed, but the set will turn on only after the first click is followed by a louder click. What can I do to repair this????
This is an older Mitsubishi projection TV set and does not have a fan or a bulb to go out. These sets are very common for the caoacitors in the power supply and the sweep power supply to go bad. To find these bad capacitors, you will need the service manual, and you can download that here:http://www.servicemanuals.net/results.aspx?type=SM&brand=0&model=%20VS%205004R. You will also need to get a capacitor checker to check the capacitors in circuit, and thats called an ESR meter. There is simply no easy way to fix this TV set without doiing these steps.
Posted on Jul 13, 2007
First try unplugging the set from the wall completely for about 20 minutes. Does the TV function normally from the buttons on the set itself?, just to eliminate any possibility of the remote being the problem. If you disconnect all the inputs that go into the set, do you get the same problem? How many hours do you have on the lamp approximately - usually if a lamp has problems, it wouldn't be intermittent or occasional, but if the lamp is nearing its expected life span, then it is just possible. Removing and reinstalling the lamp may be worth a try, just in case there is a bad contact. Does it seem to work more easily when the set is warm? If the relay itself is ok, which it sounds like it is, then the problem is most likely in the power supply somewhere, especially if it appears better when the set is warm. I had no luck finding a user manual or service manual for this set online - if you have one somewhere check to see if there is a "reset" function for the set - I'll keep looking. Are you able to open the set up, firstly to identify the relays in question and check them, and also to inspect the power transformer and associated circuitry? Waiting for your info, Hope this helps :)
Posted on Jul 13, 2007
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