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#1
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Toshiba 57H94 TV trouble code
Bumping this question back to the top.
The power light flashes green three times, separated by a long pause, then repeats. Set will not power-up. I'm wondering if the repair involves board replacement or just a component. The user manual vaguely says the green LED blinks at 3 second intervals because the CableCard fan has stopped. Mine blinks 3 times at three second intervals, the set never powers-up, and all that is running is the CableCard fan. I disconnect the tach wire, the 12 volt power to the fan will cease. Thus, it is sending tach pulses, and appears normal on a scope. Three green flashes from the power light, in an endless sequence that doesn't change when I disable the fan. Turning- off the TV by the power button does nothing because the set never turns-on. |
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#2
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Toshiba 57H94 TV trouble code
On Fri, 7 Aug 2009 16:44:34 -0700 (PDT), uptimod
put finger to keyboard and composed: Bumping this question back to the top. The power light flashes green three times, separated by a long pause, then repeats. Set will not power-up. I'm wondering if the repair involves board replacement or just a component. The user manual vaguely says the green LED blinks at 3 second intervals because the CableCard fan has stopped. Mine blinks 3 times at three second intervals, the set never powers-up, and all that is running is the CableCard fan. I disconnect the tach wire, the 12 volt power to the fan will cease. Thus, it is sending tach pulses, and appears normal on a scope. Three green flashes from the power light, in an endless sequence that doesn't change when I disable the fan. Turning- off the TV by the power button does nothing because the set never turns-on. This site appears to be offering a free service manual: http://elektrotanya.podzone.net/tosh...f/download.cgi Free circuit diagram: http://www.nodevice.com/manual/newma.../get15027.html http://nodevice.in/manual/newmans/51.../get15027.html Service Manual (US$13): http://www.tradebit.com/filedetail.p...anual-download http://www.service-docs.com/store/T-...20Manuals.html US$10: http://www.electronicsrepair.net/television32.shtml US$5.50: http://www.asm-service-manual.com/Ma...57HX84_PDF.htm - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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