[TechAssist] Re: UPD---2nd request. PTK169PAAS..Shutsdown.
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 9 Mar 2004 16:15:03 -0500
Jeff , now that you have the power supply working good. Disconnect the lead
to the Tripler and see if the B+ stays up.
Bruce.
B&T Electronics
139 Margaret St
Sarnia Ontario
Canada
N7T 2Y3
519 344 1850
----- Original Message -----
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, March 09, 2004 3:04 PM
Subject: [TechAssist] Re: UPD---2nd request. PTK169PAAS..Shutsdown.
> 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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