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Mitsubishi WD-62628 strange lamp issue
Posted: Tue Nov 04, 2014 3:18 pm
by Munkey990
I have a strange issue with my Mitsubishi WD-62628. A month or so ago it showed the red bulb indicator. I installed a new bulb and everything was fine. The old bulb was not broken like the they usually do. Normally when a bulb goes the glass pin in the center is broken. This time the bulb looked normal. After about 2 weeks with the new bulb, again the red bulb light comes on. Tried resetting, unplugging for a while, nothing but the same red bulb light. Again I put in a new bulb and the bulb I removed looked OK but it fixed the problem. Now today after another 2 or 3 weeks, again the bulb light comes on and no picture on the TV. Getting very sceptical now. I remove the bulb and put the previous one back in and low and behold, it works again.
Maybe this can explain it better:
Step 1. TV stops working and gives a bulb failure light. Put in new bulb and all is well.
Step 2. 2 or 3 weeks later again TV stops working and gives bulb failure light. Install another new bulb and reset bulb light meter in menu. All is well again
Step 3. 2 or 3 weeks later again TV stops working and bulb failure light. Instead of using a new bulb I replace bulb with the one that was removed at step #2 above that supposedly failed after 2 or 3 weeks. All is well again
Any ideas what could be causing this? I have not yet tried just pulling the bulb housing and just replacing it again without changing the bulb. If this happens again, I will try that
Re: Mitsubishi WD-62628 strange lamp issue
Posted: Wed Nov 05, 2014 9:12 pm
by grayfox
Hello!
This is actually very common, in my opinion, you keep resetting the ballast and the new lamp is powered on but the ballast is no longer strong enough to keep generating up to 15-20kV to fire it up. This is VERY common especially with Mitsubishi TVs which is why if you search the web you will find the ballast sold everywhere!
The one thing to make sure and I ALWAYS suggest is that you one make sure you have an OEM lamp, preferably a Philips lamp which is what most DLP TVs come with from factory. The model for this TV series is 915P026010. In order to get a ballast part number you will actually have to open up the TV and get a number from the board, if you order with the TV model it might vary.. For example I get a 939P978020 ballast part number but this might be different if it was assembled in Mexico or Canada..
fixyourdlp.com has a WIZARD on its homepage you can follow to cross check your trouble shooting, as well as GUIDES to see how to replace the ballast..
I hope this helps!
Re: Mitsubishi WD-62628 strange lamp issue
Posted: Fri Nov 07, 2014 4:10 pm
by Munkey990
Thank You. I had suspected the ballast but was not sure. I will look at the guides to see if replacing the ballast is something I want to tackle or if I would rather leave it to the experts.
Re: Mitsubishi WD-62628 strange lamp issue
Posted: Tue Nov 11, 2014 1:54 am
by grayfox
No problem let me know if I can help!