[TechAssist] Re: Final update. P46770CK PTV169: Bad FBT
- From: "Barry Thompson" <barrystv@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 20 Nov 2002 00:42:46 -0500
Hi Jeff: I would use the GLYPTOL, it never fails. Barry
barrystv@xxxxxxx
Barrys TV
613 224 3406
Ottawa Canada
----- Original Message -----
From: "Jeff Dougherty" <support@xxxxxxxxxxxxxxxxxx>
To: "Techsonline" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 19, 2002 10:29 PM
Subject: [TechAssist] Re: Final update. P46770CK PTV169: Bad FBT
>
> After trying two new flybacks and a used one from a direct view set, they
all
> fried the R4762U.
> I am putting the old flyback in with the pinhole sealed with silicone.
> Ran the set for hours this way, no problem. Resistor doesn't even get
warm.
> It appears these new flybacks may be OK for direct view sets, but not this
> projection set.
> Thanks to the many of you that sent suggestions and attachments.
>
> Jeff
>
> FAX 717-564-4952
> Jeff Dougherty
> Intrepid Video & Electronics Be careful of your thoughts.
> 501 Luther Rd They may become your words
> Harrisburg, PA 17111 any moment.
> 717-909-8844
> VCR tips, electronics info & general interest.
> www.intrepid-video.com www.tech-repair.net
> www.thetoolcaddy.com www.9-11-2001tragedy.com
> ***********************************************************************
>
>
>
> Unit came in with HOT shorted, found IHVT with a pin hole in it arcing to
the
> metal shield for the AC plug.
> I repaired the hole to verify nothing else was wrong with the unit before
ordering
> a flyback. Unit ran for a few minutes.
> Order FBT from Tritronics #232191 which is a new part.
> After installing new part, unit would not turn on for a few seconds, then
R762 on
> power board started to smoke...or at least smoke came from this direction.
I
> quickly turned of the variac.
> I replaced the FBT I had repaired, and now unit only clicks numerous times
after
> pressing power, press power again and stops clicking.
> R762U reads about 1.2K, but color code appears to be yellow, black and
third band
> is burnt.
> I have no print.
> So, either I got a bad flyback or this was not the right part number?
> Any suggestions?
>
> Jeff
>
>
>
>
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