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

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


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

Thread Tools
Old 27th May 2020, 12:51 pm   #1
ben's Avatar
Join Date: Aug 2006
Location: Madrid, Spain / Wirral, UK
Posts: 5,861
Default LOEWE 5281 TV chassis 110Q23

This, my main set, gave a bright raster with retrace lines upon powerup this morning. Measuring across the RGB o/p stage rectifier on the CRT PCB I'm only getting some 60v. No obvious burnups. Resoldered a few suspicious looking joints to no avail.

I'm working blind here as have no schematic despite a few web searches. The supply voltage appears to be derived from the LOPTmr pin 4, via R547 but it's a crowded board and not that easy to trace. Ring any bells for anyone?
ben is offline   Reply With Quote
Old 27th May 2020, 2:21 pm   #2
Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 2,874
Default Re: LOEWE 5281 TV chassis 110Q23

The rectifier should be on the chassis, as far as I remember Loewe.

The 110Q23 is also called Q2300, maybe this helpsin searching for a schematic.

Does it have a Philips ESF/ERF tube?
Maarten is offline   Reply With Quote
Old 27th May 2020, 3:37 pm   #3
1955APREN's Avatar
Join Date: Nov 2010
Location: Market Drayton, Shropshire, UK.
Posts: 371
Default Re: LOEWE 5281 TV chassis 110Q23

Hi Ben
Can you locate the point were the 200v ( apr) Arrives at the crt base, try tacking a 4.7uf 250v from this point to chassis if this clears the fault look for
oc cap after the diode from the lopts . I might have circuit in my shed I will look after

Last edited by 1955APREN; 27th May 2020 at 3:38 pm. Reason: spelling
1955APREN is offline   Reply With Quote

Thread Tools

All times are GMT +1. The time now is 2:50 am.

All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at
Failure to heed this warning may result in death or serious injury to yourself and/or others.

Powered by vBulletin®
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Copyright ©2002 - 2020, Paul Stenning.