[TechAssist] Re: TA...NAP HD2717C101 27B800, no video..(was verticalprblm)
- From: Doug Keller <dek@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 28 Mar 2004 09:19:58 -0500
Those ICs in that circuit are the most finicky of anything I have ever
seen. I had 6 new ones. 5 didn't work, but the 6th one did. I find it
odd that I could have gotten 5 "bad" ones from 3 different places.
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:
>Thanks Doug.
>I used NAP OEM..but I guess it won't hurt to try an NTE.
>
>
>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: "Doug Keller" <dek@xxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Saturday, March 27, 2004 3:29 PM
>Subject: [TechAssist] Re: TA...NAP HD2717C101 27B800, no video..(was vertical
>prblm)
>
>
>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
>>
>>
>>-----------------------------------------------------------------------------
>>Lost Password:
>>http://www.tech-assist.org and select "Login Problems?".
>>Email Archives:
>>//www.freelists.org/archives/techassist/
>>
>>
>>
>>
>>
>>
>>
>
>-----------------------------------------------------------------------------
>Lost Password:
>http://www.tech-assist.org and select "Login Problems?".
>Email Archives:
>//www.freelists.org/archives/techassist/
>
>
>
>
>-----------------------------------------------------------------------------
>Lost Password:
>http://www.tech-assist.org and select "Login Problems?".
>Email Archives:
>//www.freelists.org/archives/techassist/
>
>
>
>
>
-----------------------------------------------------------------------------
Lost Password:
http://www.tech-assist.org and select "Login Problems?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
