[TechAssist] Re: TA...NAP HD2717C101 27B800, no video..(was vertical prblm)
- From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 27 Mar 2004 09:13:44 -0500
Jeff,
I have had same problem after vert repair, someone suggested
replacing the eprom.. and that took care of the problem.. I believe the
25B800 and the 27B800 use same IC..#483520988527 according to my notes..
Hope this helps
Bob,
Bobs TV Worcester, ma
woodman1@xxxxxxxx
Main 508-853-1482
Fax 508-853-1480
----- Original Message -----
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
To: "Techassist" <techassist@xxxxxxxxxxxxx>
Sent: Friday, March 26, 2004 5:45 PM
Subject: [TechAssist] TA...NAP HD2717C101 27B800, no video..(was vertical
prblm)
> This set came in with the typical vertical problem..or so I thought..
> I repaired the vertical section by replacing the two resistors, R420,
R445, D409, D445 and IC500 and
> repaired my traces that lifted...I double checked all the traces and they
are fine.
> Then, I had blue screen with retrace. Found voltages off on CRT board.
Found R50 on CRT open, no help.
> Resistance across R53 was half what is should be. The other two resistors
for the red and green measured
> correctly, pulled the resistors and measured fine out of circuit so I
replaced the IC TDA6106.
> Now I have raster at all, no OSD, increase G2 and all I get is raster with
retrace lines.
> I checked my -13 and +13 source, they are fine. I replaced the vertical IC
again and no change.
> Any ideas?
> 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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