Entertainment Center: TVs, Stereos, VCRs and DVDs - 50' Mitsubishi Problem
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11-14-01, 05:02 PM
Hello All, Heres my problem, I have a 50' Mitsubishi big screen that i've had about 6 years now, for a while now the picture seemed to want to go then it would be alright, to make a long story short, the thing finally went black. I get sound but no picture. Can anybody tell me what might be wrong before i call and have it serviced or maybe fix it myself? Thanks for your time JR V
Smokey
11-14-01, 05:29 PM
Good Evening, JR V:
Well, there is a variety of things that can cause a projection unit to quit showing a picture. A few of them are:
a) High voltage failure
b) High voltage regulator failure
c) Blanking circuit failure
d) Bad ground on the projection tube filaments
e) Failure in the video processor
First thing to do is access the projector and have a look at the face of the tubes. If you can see them lit up then the problem is not high voltage or filaments. If you see no activity on the face of the projector tubes, then the problem is most likely high voltage failure.
So many possibilities here and it is impossible to give a definite answer. The only answer is to get the lid off the the thing and do some troubleshooting. For that you need a technician.
Be wary of large repair costs, though. The average life of this set is only nine years before major repairs overshadow keeping the beast. Be sure to get estimates before you send it to the shop or have it repaired. You might want to consider replacement.
Smokey ;)
Well, there is a variety of things that can cause a projection unit to quit showing a picture. A few of them are:
a) High voltage failure
b) High voltage regulator failure
c) Blanking circuit failure
d) Bad ground on the projection tube filaments
e) Failure in the video processor
First thing to do is access the projector and have a look at the face of the tubes. If you can see them lit up then the problem is not high voltage or filaments. If you see no activity on the face of the projector tubes, then the problem is most likely high voltage failure.
So many possibilities here and it is impossible to give a definite answer. The only answer is to get the lid off the the thing and do some troubleshooting. For that you need a technician.
Be wary of large repair costs, though. The average life of this set is only nine years before major repairs overshadow keeping the beast. Be sure to get estimates before you send it to the shop or have it repaired. You might want to consider replacement.
Smokey ;)
11-14-01, 05:39 PM
:) Thanks For Your quick reply, I did open the back and I do see 3 Tubes that are on, I'm not sure what these are. Also, there is a awful lot of dust, could cleaning this help? Once again thanks JR V
Smokey
11-15-01, 02:05 AM
Good Morning, JR V:
Cleaning won't hurt a thing and is a good idea. These units are like a dust magnet and gather quite a bit over the years. Here
is a website that has a lot of good information on television (including how to clean one).
Check it out at http://an.hitchcock.org/repairfaq/REPAIR/F_tvfaq.html
Check out Chapter 20 on the Repair FAQ
But, I am certain things are a little more serious than cleaning. But, at least you can see things better and it will be easier to evaluate the failure.
Smokey ;)
Cleaning won't hurt a thing and is a good idea. These units are like a dust magnet and gather quite a bit over the years. Here
is a website that has a lot of good information on television (including how to clean one).
Check it out at http://an.hitchcock.org/repairfaq/REPAIR/F_tvfaq.html
Check out Chapter 20 on the Repair FAQ
But, I am certain things are a little more serious than cleaning. But, at least you can see things better and it will be easier to evaluate the failure.
Smokey ;)