[TechAssist] Sanyo DS35520 Dead Set, Q605 Shorted
- From: "Gary Pahls" <bec@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 7 Nov 2005 12:39:33 -0600
This set came in Dead, Q605 Shorted. After replacing Q605 the set is still
dead but there is a chatter coming from the power supply. Scoping the
oscillator circuit and bring the power supply up slowly It appears that the
power supply runs OK to about 40 VAC. Increasing the voltage beyond this point
causes the oscillator to break up into high frequency bursts causing the
chatter we here. Has anyone had experience like this? We have subsituted
virtually every part in the power supply with no results. There are no
secondary shorts loading it down. WE'RE STUMPED.
TIA
Gary Pahls
Beloit Entertainment Center
bec@xxxxxxxxx
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