Originally Posted by bitemymac
Thank you for posting the information. Would it be correct to assume that replacing two 470 Ohm 1/3w chip resistors should fix the symptoms? Other replacement parts are recommended as preventative measure?
I am not sure how much longer I would want to prolong the life of this TV, prior to replacements of other aging/expensive parts, but if replacing two resistors can prolong and correct the powersupply function for next 3 more years, I'll vouche for a simpler patch.
Thanks again for sharing your experience.
Its all up to you... I just figured most people will want to do it right the first time. For me, I know better. Along with the resistors failing, the Zener diode on the opposite side also is in need of replacement, as I listed it in the required parts.
Gosh, this tv should last 15 or more years easy. I gone through alot of the design and in my maintanence, and found things well thought out just poorly implemented. Like the DLP chip needed heat sink compound as the pad was not the best at transfering to the heat sink. Also the power supply in need of a proper update.
As for wanting to replace in 3 years, so far I can't see much of an improvement in picture until WQXGA becomes reality. Which could be about 15 or so years down the road for the USA. Seems now many stations are now broadcasting in 720p or being up converted properly for HD content. Though there are still alot of older content that is of poor quality upconverting.
IMO the powersupply is the problem for all the issues people have reported with this tv. Unfortunately Samsung revised a few things with the power supply and along with that, some of the components used in the power supply were not the best quality. Outside of the toroid filters, the filtering components are cheap and weak.
For myself my DLP tv is calibrated and performs better than Plasma IMO. I dont like the new Mits as it is does not have perfect lineararity like my Samsung. Since the lineararity issue is from the thin design. Its about 7 inches thiner than my Samsung.
What troubled me is the components in filtering and the revision change, if Samsung would have spent lets say $5.00 more per tv. There would be hardly anyone complaining about Red LEDs failing, DMD issues or the failing to power up issues.
I trusted Samsung too much in the begining, I could have noticed more about this much sooner and would have done a few things to make the power supply better protected as I took note of its design weakness in my earlier thread during my cleaning and maintenance.