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 Radio (domestic)

Notices

Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only.

Closed Thread
 
Thread Tools
Old 24th Jul 2009, 2:39 pm   #21
benjamin77
Retired Dormant Member
 
benjamin77's Avatar
 
Join Date: May 2009
Location: High Wycombe, Buckinghamshire, UK.
Posts: 326
Default Re: BUSH VHF61 no stations

I have just tried to pick up the oscillator with the use of a second set and was not able to pick it up. Does this mean one or both of the EF89's are duff or that the wave change switch is stopping them from working ?
benjamin77 is offline  
Old 24th Jul 2009, 2:46 pm   #22
Steve_P
Dekatron
 
Steve_P's Avatar
 
Join Date: Sep 2003
Location: Bolton, Greater Manchester, UK.
Posts: 6,644
Default Re: BUSH VHF61 no stations

No, the EF89's are OK. The faulty valve is the ECH81. You could try plugging a replacement in to see if this cures it.

Check C35, R8, C24, C27, R9. C31 and R10. (Trader sheet.)

This is the oscillaor side of the ECH81. Also check that the tuning cap isn't shorted. (Bent plates).

Cheers,

Steve P.
__________________
If we've always had it, why is the Car Boot open? You're not sneaking another Old TV in are you...?
Steve_P is offline  
Old 24th Jul 2009, 9:03 pm   #23
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 5,997
Default Re: BUSH VHF61 no stations

Measure V3 pin 8 when switched to AM first...This is the oscillator anode and when last measured it was 0.
PJL is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 2:54 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 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.