Question about Sony FD Trinitron WEGA KV-32HS500 32" TV
The set went blank. No sound, no picture. Left it set for a few days and tried it and low and behold it worked, for about a week. I can hear a humming sound when it is turned on, like the power supply is on. The red light blinks in the front panel. Any ideas?
Dust tends to be attracted to static generating devices like TVs and this dust creates a insulating blanket on circuit boards which then fails to allow the board to cool down properly. Specifically, the board(s) that converts the power coming in from the wall socket to various voltages and amperages to supply the variety of functions in a modern TV today. Additionally, to this dust blanket effect, circuit boards that heat up and then cool down often suffer from "Electronic Fatigue". This is a phenomena resulting from the molecular structure of the boards base material structure changing state many many times (cold/hot, hot/cold). Eventually, the fatigue causes come components, resistors for example, to fall out of their designed spec and range of tolerance. Once the electronic components fall out of its range of tolerance the engineered design of the circuit board will either fail completely or work weakly and then fail. In electronics, for TVs in this example, the physics of the circuit board and its onboard IC chips either work correctly or don't and when they don't a fail safe device turns energy off to all onboard systems to avoid extra ordinary damage that would most likely result in a fire.. or worse.
Sorry this sounds long winded but, I believe in giving a thorough answer and to not assume what your knowledge level is or isn't.
Back in the Day, what we termed TVs like your example was a TV 'on the blink'.
Have fun shopping for your new HD Flat Panel,
Posted on May 22, 2008
Posted on May 22, 2008
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Posted on Jan 02, 2017
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