[TechAssist] Re: Sanyo DS35520 Dead Set, Q605 Shorted
- From: "Gary Pahls" <bec@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 7 Nov 2005 13:23:09 -0600
Must be a different chassis, this one does not have an R612, Thanks anyway.
Gary Pahls
Beloit Entertainment Center
bec@xxxxxxxxx
----- Original Message -----
From: "repair11" <repair11@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, November 07, 2005 12:47 PM
Subject: [TechAssist] Re: Sanyo DS35520 Dead Set, Q605 Shorted
>
> Gary, check R612 out of ckt, hth.
>
>
>
> Charles Betzler
> Best Electronics
> repair11@xxxxxxx
>
>
>
>
> ----- Original Message -----
> From: "Gary Pahls" <bec@xxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, November 07, 2005 12:39 PM
> Subject: [TechAssist] Sanyo DS35520 Dead Set, Q605 Shorted
>
>
>> 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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