[TechAssist] Re: Sanyo DS25204 No vertical
- From: "Terry J Hutchison" <sony1@xxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 10 Apr 2005 00:15:20 -0400
Do you have B+ to the vert IC? Don't mean to insult your intelligence, but
you could also check the diode that connects pin 1 or 7 to the other let of
the vert IC to see if the volts are present there to. I have also seen a
bad tuner cause a loss of vert in those older Sanyo's you can desolder the
tuner and see if you get your scan back. Hope this helps and let me know
about the B+.
Terry
> [Original Message]
> From: John <maintv2004@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Date: 4/9/2005 5:16:19 PM
> Subject: [TechAssist] Sanyo DS25204 No vertical
>
> I'm working on a Sanyo DS25204 (chassis 25204-01) made in 2004. I have
ho vertical but high voltage and sound are OK. I do not see a drive
waveform out of IC101 pin 26. I have isolated that pin from any shorts. I
do not have the exact schematic. Can someone verify that pin 26 is the
vertical drive out of this chip (LA76843N) or have any suggestions as to
what could be wrong. I find it strange that everything works except the
vertical. TIA, John.
> John Mielke
> Main TV
> Longmont, Co.
> www.longmontmaintv.com
> 303 776 6955
>
>
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