Brian
Unregistered User
bnamwalker@lineone.net
Mar 15, 2003, 10:44 AM
Post #1 of 1
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MitsubiSI CT-21M5BT POWER UP PROBLEM
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Tv won't power on. I scope the Main HT transformer Base and I only get a few pulses before shutting off.
Sometimes the green light comes on when I power up, sometimes the red LED. Every time the mains is switched on I always get these pulses. I beleive the overload circuit is cutting in. I thought the main HT transformer was knackered but I'm sure once or twice I've had static on the screen when I tap the board.(cant get it to do that now), Therefore I think the transformer is ok. Main Transistor is OK, I get perminant 5v but the switched 5v is there if I get green LED on. On one side of the transformer I see approx 120V which should switch to 0v.
CAN ANYBODY HELP OR SUPPLY ME CIRCUIT DIAGRAMS.
Kind regards
Brian
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