[TechAssist] Re: 2nd request. PTK169PAAS..Shutsdown.
- From: Al Brown <abrown@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 08 Mar 2004 10:48:32 -0800
Jeff,
I had one of those chassis's not too long ago doing exactlty the same thing and
after replacing all of the
things you mentioned, I found the red crt was bad.. pulled the crt board off
and it started up ok..
Al Brown
Largents inc.
718 main st.
Lewiston , Id. 83501
208-743-8579
208-746-3426 fax
Intrepid Video Support wrote:
> 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
> Intrepid Video TV/VCR
> 263 S Front St
> Steelton PA 17113
> fax...717-564-4952
> www.intrepid-video.com www.tech-repair.net
>
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