SOURCE: 46" Samsung DLP Lines & Freeze up
This is a possible fault in the power supply, and can be a problem with some decoupler caps on some of the boards. The vertical bars and unstability are usually attributed to having high frequency noise and or clocking pulses crosstalking on to the power distribution lines that run through the boards. This can be switching power supply noise, or cross-talk from clocking pulses.
Another thing that can cause your described fault is unstable clocking between the devices that are reading and writing to the data busses. There are a number of data busses running through the set for the boards to be able to communicate with each other.
The tech will use the process of board swapping to service the set, and then do the adjustments as necessary to make sure the new boards match up.
Yes... DLP sets are fairly expensive to service!
This is my personal opinion. If the set is out of warranty, I would change for a Plasma or LCD set. If you compare the performance of these to ther DLP, the difference is very big. From what I am seeing from a service point of view, the DLP's are lower in reliability.
Jerry G.
SOURCE: Color problem with the samsung 46" PCK520R TV
There are a few possible causes for this
-Picture tube has become weak after long useage
-A fault with the automatic degauss circuit could be causing the color problems.
-The color drive circuits may be out of adjustment.
I don't have instructions for you on how to fix this, I would recommend you either buy premium assistance or contact
another expert with long tv experience to possibly get details
on how to correct this problem.
I would recommend you contact your dealer for repairs if you have warranty. If you don't have warranty it may be cheaper to ask around.
SOURCE: Samsung 46 DLP picture freezes and then....
common problem on samsung. bad DMD BOARD. these are modules located on light-engine. there very proud of this little jewel. usually parts cost 400-500.00 dollars for the shop. after mark-up & labor don't be shocked at 600.00-700.00 repair bill. this is of coarse for dmd replacement. 85-90%. if logic board, est. 400-500.00 repair. mch
SOURCE: Samsung DLP TV has lot picture. Makes a Humming sound
That sounds most like the color wheel,
to change that you need to have some skill in electronics, I would recommend to take it to a shop
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