I have a Zenith rearscreen projection tv and the red projection bulb burned out. The model # of the TV is A50M91W.
Is it difficult to replace the bulb? How much is the bulb? Is there a part number on the bulb? How long do these bulbs generally last? I bought the unit used.
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This is a CRT(cathode ray tube) not a bulb. A Bulb is totally different. If you replace one Tube, you need to replace all 3 or the colors will never match properly. However, This model no longer has parts available. Even if they were, the cost would be close to $1000 in parts. I would not recommend repairing this TV.
No, it is convergence problem due to convergence output chips failure in rear projection tv. Local tv repairman will fix it because it requires soldering work to replace bad chips in circuit board. Thanks.
hey I have a zenith projection tv that is only 3 years old and i have already replaced the stupid bulb 3 times at 450.00 a pop. No one told me at the time that i bought this tv at best buy that this bulb would have to be replaced this often. and the bad thing is i never watch this damn thing anymore but i paid 2200.00 for a tv that i cannot afford to watch and zenith will not help me at all with this problem
It could be that the picture tubes have gone down on emission, there is a prcedure that can be tried to bring up the overall brightness but it is just possible that you will loose some picture quality. If it's a 1994 projo tv i am thinking of the three crt system, a gray scale alignment would probably correct the dark condition in your picture, again depending on how far gone is the emission in your picture tubes, if your projo tv is the dlp system, the bad news is that you could be needing some light engine repair. The color adjustment is possible with the availability of a service manual or in the case of the dlp system, light engine repairs or replacement are available from some on line stores.
It sounds like your looking for a CRT (red) the part # is on the CRT and could be puchased through any Zenith (LG) distributer- usually around $300- $500. Google the part # when you get it and you may find a used Picture Tube (CRT)for cheaper.
Hi, this is a convergence chip failure and it can only be corrected by replacing the entire convergence board in this unit. This Board regulates and collaborates the RGB streams. if there is an apparentmalfunction, it will become impossible to correct the issues you are experiencing at this time.
Simply replacing the convergence board or chip set will fix this issue.
If the spot is perfectly round then most likely you have phosphur burn on 2 of the CRT's. If it uneven then maybe it is a spider who has made his home in there (not uncommon as it is warm and dry which is what they like).As far as cleaning goes, don't use standard glass cleaner as it will damage the screen. Use warm water and a soft towel, or purchase glass and plastic cleaner which is ususally a foam type spray.
Sorry man. I looked and looked and dont see a model such as the A50M91W or the IQC50H50H95W? Are you sure of the models?? Cause my connection for Zenith even has inported set manuels available, But im told NO such model Found. So they told me to advise you to look in your owners manual for a contact # for service and call them and see if they can get it for you. Or call here 1-877-993-6484. OH BTW what is the problem your having??? Good Luck