---

On 2005-03-27 03:34, kx250rider wrote:
I was given a free KV-36XBR400 last week with a shutdown/blinking code failure. I was a TV repairman in the 80s and 90s, but quit about 5 years ago when it got to be that most people would rather buy new than repair. This was the case with this TV... The customer laughed when the shop gave a preliminary quote and told the shop to dump the TV. It shuts off after a few minutes and blinks the LED 7 times, pause, and 7 more until I pull the plug. Then I can turn it back on and eventually it will stay on. The B+ is regulating beautifully at 135.0, but I notice that the scan is about 1/2" shrunken horizontally. Obviously these are related. I don't have the schematic for it yet, and I am REALLY curious what that blinking code points to! I remember reading that the deflection yoke is a problem on these sets, and that could in theory cause a horizontal shrink and overload on the sweep circuits to cause shutdown. If it's on the deflection (or "D") board, it is most probably a leaky capacitor or a failed regulator chip. People here are talking about "replacement" D boards, but that is silly when you can repair. Motorola tried that "replace board only" thing in the 70s on their Quasar TV sets, and it was a disaster. Motorola never recovered from that fiasco and eventually sold the Quasar name to Matsushita .

If anybody here knows the definition of that 7-blink code, please post... Otherwise, I will troubleshoot the board when I pick up the manual and will (hopefully) post my findings. I do not believe in replacing complete boards!!!!!!!! I always did it the old fashioned way by troubleshooting and replacing discrete components. How about a  30 cent capacitor in stead of a $400 D- board!!! Are the Sony factroy techs being LAZY, or just INCAPABLE of an old-fashioned troubleshoot?

Just one more MAJOR point: If you get 3 or 4 years out of ANY late model TV set, you are doing great (Sony or any brand)! These aren't what they were in the 1960s and 70s when you could expect 30 years. Most 1960s and 70s TVs such as the 1970 Sony KV-1710 or the Zenith Titan series Chromacolor sets are still working.... just as they were when they showed the Nixon inauguration live. On the other hand, most '90s TVs are decomposing at the bottom of landfills. There is also a pile of plasma TVs at a shop I used to work with, and they are REALLY nonrepairable. Buyer beware!!!

Charles

---

I dispute the notion that “service technicians are getting lazy”. Manufacturers refuse to increase labor rates. A large percentage of customers have service contracts, which set flat rates for labor. The remaining few act like you are taking food out of their children’s mouths when you give them the labor estimate. So naturally we are going to spend the least amount of time possible on each repair. If the repair is going to involve a large amount of time, we may just recommend replacing the entire board. fficeffice" />>>

  As for your situation, look at the larger picture. Almost all Sony directview and projection sets have “D” boards. But they are different from each other. The “D” board creates high voltage and convergence. These are the two most power hungry functions in any set. So where do you think the most failures are going to occur? >>

  Too many people seem to think they are entitled to failsafe operation for ten years. Tv’s break! We see most major brands and Sony’s are no more prone to failure than any other. We replace the same types of parts in the same circuits for all brands. >>

 >>

Treat you technician kindly, he is an endangered species.>>

 >>Dakota

-----------------
http://www.fixyourowntv.com

---

On 2005-11-01 15:29, jehill wrote:
What is the model number of your 32" Sony Trinitron?  Who knows?  The cost of a new D board from Sony might be less than for a KV-36XBR450.

---