UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Television and Video

Notices

Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

Closed Thread
 
Thread Tools
Old 31st May 2021, 2:47 pm   #1
Snarf81
Heptode
 
Snarf81's Avatar
 
Join Date: Aug 2018
Location: Rogiet, Monmouthshire, Wales, UK.
Posts: 553
Default Sanyo VCR7200 NTSC Beta hi-fi colour problem.

Hi all,
I've recently come into possession of an NTSC Sanyo VCR7200 Beta hi-fi vcr which has a colour output problem.

The output is in black and white but very often a vertical rainbow effect of colour stripes come up on the screen, often in pause and picture search modes. The TV's I've connected to the vcr are capable of displaying NTSC signals, so it's not a TV problem.

Here's where things get complicated. I've been loaned an oscilloscope to help me try to find the fault which I'm assuming is on the top flip up video board, but I'm a total novice with scopes and wouldn't know where to connect the probe to, or what settings to use on the scope. I'll attach some pictures of the colour problem, and a picture of the loaned scope.

Any info/help with trying to find this fault would be very much appreciated. I don't have the service manual for the vcr unfortunately.

Thanks.
Attached Thumbnails
Click image for larger version

Name:	IMG_20210530_111333.jpg
Views:	97
Size:	36.0 KB
ID:	235148   Click image for larger version

Name:	IMG_20210530_111409.jpg
Views:	92
Size:	38.0 KB
ID:	235149   Click image for larger version

Name:	received_820751655543836.jpg
Views:	87
Size:	58.5 KB
ID:	235150   Click image for larger version

Name:	IMG_20210531_152945.jpg
Views:	77
Size:	82.4 KB
ID:	235151  
__________________
Richard
https://youtube.com/user/MrBetamax
Snarf81 is offline  
Old 9th Jun 2021, 7:52 am   #2
Snarf81
Heptode
 
Snarf81's Avatar
 
Join Date: Aug 2018
Location: Rogiet, Monmouthshire, Wales, UK.
Posts: 553
Default Re: Sanyo VCR7200 NTSC Beta hi-fi colour problem.

The vcr is now fixed.

Can this be closed please?
__________________
Richard
https://youtube.com/user/MrBetamax
Snarf81 is offline  
Closed Thread

Thread Tools



All times are GMT. The time now is 5:23 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Copyright ©2002 - 2021, Paul Stenning.