This month repair article is about DLP TV repair. DLP stands for Digital Light Processing and
the DLP sets are usually lower in price than plasmas and LCDs. I personally have not repair any DLP TV before but
for Damon he is a pro on this TV set. You can click on this Wikipedia link for more information about DLP TV and you can view the video below to
check on the comparison between LCD TV, Plasma and DLP TV:
Let's check out the DLP article below:
Damon is servicing a DLP tv that has a 2 part problem. The first problem is the tv is dead, there is high dc
voltage on the primary side of the psu theres no low dc voltage or stand-by voltage at all.
Upon troubleshooting the psu Damon discovered a shorted power rectifier and open/burned metal film capacitor
(104j). Also cold & dry solder joints near filter capcitors.
After installing new rectifier, metal film cap, and resoldering dry joints the tv turned on and powered up
normally, but then the tv would shut down after about 1 minute. Damon has pulled out the light engine and is now
going to troubleshoot the colorwheel rotating function.
After examining the colorwheel Damon has noticed a slight squeeking sound while spinning the colorwheel with his
fingers. Any sound like that from a colorwheel means it needs to be lubricated or replaced. The colorwheel is not
spinning at the correct rpm frequency.
Damon has decided to replace the colorwheel with a new OEM replacement wheel assembly. Damon will repair the faulty
colorwheel some other time and use it for a future servicing job.
After servicing the psu and replacing the colorwheel the tv stayed on with no problem, however the picture looked a
bit dim. The dimness wasn't an electronic problem, it was due to a very dusty lamp lense cover and a bulb on its
way to burning out.
Cleaning the lamp cover and replacing bulb gave the picture brightness new life again. This tv is 100% serviced and
functioning like new.
The above repair article was contributed by Damon (USA) who is a specialist in LCD TV,
DLP TV and Plasma TV Repair. If you have not check out his ebook on Plasma TV repair then click on the
ebook photo below for more information. Currently he is writing another repair book which
will be completed very soon.
By the way, if you have any good repair article that need to be shared with fellow ERG members
please do send me an email. I will review the article and if the content is good I will publish