[TechAssist] Re: Philips PTV630 HV transistor shorted
- From: peggs <peggs@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
- Date: Thu, 26 Sep 2002 07:55:39 -0500
If the CRT is not cracked,you
probably have a bad fly.
Peggs
At 07:47 PM 9/25/02 -0700, Neil Bowman wrote:
>
>There is a remitter resistor between the base and collector. You will
>probably see that it's blackened on the side of it. Before replacing, look
>directly into the blue crt and you will probably see that it's cracked.
>Neil TV Doctors Monroe,Wa.
>
>-------Original Message-------
>
>From: techassist@xxxxxxxxxxxxx
>Date: Wednesday, September 25, 2002 07:26:42 PM
>To: tech assist
>Subject: [TechAssist] Philips PTV630 HV transistor shorted
>
>Could use a bit of info on this PTV630 philips. Don't see many because
>there isn't a philips dealer in this area.
>
>The high voltage O/P transistor is shorted. All power supply voltages
>appear normal, deflection aand audio is working.
>
>Question: there is 130V on the collector of the HV transistor 2DS1556
>which is shorted so there must be a fuse or fuse resistor somewhere in
>the emitter line, could someone tell me the location and value of the
>fusable.
>Found tips on ptv620 and a .0019uf cap was mentioned as possible cause
>and to check the blue crt, does this apply to the 630 as well?
>
>Any suggestions welcome, may save an extra trip as I have to work on
>this on site.
>
>Al G
>Al's TV-Electronics
>Pembroke Ont.
>Canada
>613-732-3240
>
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Peggs' Electronics
1519 West 2nd Street
Owensboro,KY 42301
270-926-4968
fax 270-686-7399
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