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 22nd Apr 2021, 9:54 am   #21
Gabe001
Octode
 
Join Date: Oct 2019
Location: Stockport, Greater Manchester, UK.
Posts: 1,611
Default Re: Regentone

It would be interesting to hook up the scope along the same signal path in the RF/IF stages to try to identify where the signal loss is occurring. Alternatively you can use another radio, usually a portable transistor, to find out if the oscillator is working.

I'm sure you know all this already. Let us know where the fault is. As I mentioned earlier, they do work well and sound good too. Good luck

Last edited by Gabe001; 22nd Apr 2021 at 10:12 am.
Gabe001 is online now  
Old 22nd Apr 2021, 3:52 pm   #22
Radio Tech
Nonode
 
Radio Tech's Avatar
 
Join Date: Dec 2012
Location: Bocking, near Braintree, Essex, UK.
Posts: 2,068
Default Re: Regentone

Hi Gabe001

I did hook up a scope and there is around 100m/v of signal from the oscillator, I am suspecting that either the EF39 is going down as the set warms up or the triode section of the ECH35 is going down. But when the sound has dropped, placing a finger on the grid of the EF39 will bring up the sound. Peculiar fault this, I will get there in the end.

Regards

Ken
Radio Tech is offline  
Old 23rd Apr 2021, 6:45 pm   #23
Radio Tech
Nonode
 
Radio Tech's Avatar
 
Join Date: Dec 2012
Location: Bocking, near Braintree, Essex, UK.
Posts: 2,068
Default Re: Regentone

Hi Folks

I knew I would win with this set in the end, I traced the fault back to the ECH35 it was the Triode section of that valve which caused all that bother, apart from a 10k resistor reading 1k higher than it should on the output valve.

Now for the cabinet, get all that grime off and polish it.

Regards

Ken
Radio Tech is offline  
Old 23rd Apr 2021, 8:33 pm   #24
Gabe001
Octode
 
Join Date: Oct 2019
Location: Stockport, Greater Manchester, UK.
Posts: 1,611
Default Re: Regentone

Well done.

Your cabinet doesn't look too bad to start with.
Gabe001 is online now  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 1:56 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.