[TechAssist] Re: Philips 27D7 Chassis : Flyback Bad??

  • From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 16 Oct 2003 22:10:00 -0400

Jeff,
From Tech Repair CD:
NAP\TP3281  D7\No turn On\Flyback popped taking out Jungle IC and other stuff. 
Many cases include loss of
H drive and others may have loss of video. There are several different 
versions\of this chassis* so part
numbers may vary. These are the most common parts that die when the flyback 
takes a dump... check them all
when replacing flyback (IHVT).\D7\see D7 Link in this NAP table. 
http://wa6ati.com/D7-DOC.pdf\\\\\\\



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: "Shoreline Electronics" <jstielau@xxxxxxxx>
To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 16, 2003 4:42 PM
Subject: [TechAssist] Philips 27D7 Chassis : Flyback Bad??


Make : Philips
Model : TP2781 C101
Chassis : 27D7
Problem : No HV.  LED flashes in groups of 5

We have done a few of these in the past and are familiar with the parts they
wipeout when the flyback fails.  All the typical parts that are either blown
off the board or shorted test OK.

I can drive the horizontal section with a Sencore HA2500 and it tests OK.

We do have 130V on the collector of the horizontal output and see a brief
pulse when the set tries to start.

I'm fairly certain the flyback is prob bad ( surprised?)....but while I wait
for one to arrive....has others seen this scenario on this chassis......bad
flyback only?  Drives good but breaks down under full load?

=================================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
(860)399-1861
(860)664-3535 FAX
jstielau@xxxxxxxx
=================================

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