[TechAssist] Re: UPD---2nd request. PTK169PAAS..Shutsdown.
- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 9 Mar 2004 15:04:26 -0500
Found resonator had electrolyte all around it...cleaned board, replaced
resonator and two caps right
there...now standby is fine, but of course this *&^*^* set still shuts down.
Voltage on pin 16 of U4101 is 10.4 v...stand by and when I press power doesn't
change...pin 15 is the
same..
I've been all over the troubleshooting guides, changed ALL the caps in the
regulator circuit, CR4118
changed and checked all the resistors...
On me last breath...I appreciate the many responses and will send my thank yous
after I get this fixed...
Thanks.
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
Still working on this, can not figure out why it is shutting down as HV builds.
Would a defective vertical section cause this set to shut down?
REG B+ is 170 in standby, drops to 162 when I press power..is this normal on
this set?
Schematic shows Reg B+ <72-A>, Not sure what that means.
I've repaired many of these with a splitter, flyback or replacing the parts in
the power supply.
I've done all this and set still shuts. I've replaced all the caps, the boxed
caps in front of the HOT,
CR4118(tested OK), U4101, Q4101, Q4401..and all the caps. Checked all the
diodes and resistors and can
find no problems.
I'm running out of time on this one....Does anyone have any idea what I may
have missed?
Thank you.
Jeff Dougherty
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