[TechAssist] Re: TA...NAP HD2717C101 27B800, no video..(was verticalprblm)
- From: Doug Keller <dek@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 27 Mar 2004 15:29:31 -0500
I had one of those and it was the vert output IC. I went through like 5
different ones from different places, and was about to just give up but
I ordered an nte replacement, put it in, and it worked!!!! Could have
knocked me over with a feather.
Doug Keller
Wis-Kel Electronics
101 Freeland Ave.
Terra Alta, WV
USA 26764
dek@xxxxxxxxxxxxxx
dek@xxxxxxxxxxxxxxx
http://www.tech-assist.org
"Learn from the mistakes of others, because you
won't live long enough to make them all yourself"
Intrepid Video Support wrote:
>Still having problems with this...original message below.
>I have my -13 and +13 on the vertical IC. If I disconnect the vertical yoke, I
>get a horizontal line and
>power LED flashes continuously, so it seems the problem is definitely in the
>vertical section.
>I checked the yoke it has about 8 ohms across the windings.
>Another Philips yoke I have here gives me 9 ohms, so I don't think the yoke is
>the problem.
>I grounded pins 6,7 of EEPROM and still no video.
>I checked all resistors, capacitors and diodes in vertical section.
>A schematic of the vertical section would be great, if someone can email it to
>me.
>An last advice before I give this one to the Dawgs?
>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
>
>----- 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
>
>
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