Ace Sheerline Radiogram. Chassis No. 357/S. - UK Vintage Radio Repair and Restoration Discussion Forum

AlisonW · 23rd Nov 2017, 5:13 pm

Hi everyone.

Just acquired the above. It has a Monarch deck attached. It is driving me mad. Just changed the output and preamp valves. Still a really bad sound from the radio and record player, very distorted. Also when I turn the tone down the volume goes down too. I cannot find anything about this radiogram online as the only ID on it is the chassis. I would really appreciate your help. I have found quite a basic schematic but it doesn't seem much help.

Cobaltblue · 23rd Nov 2017, 5:34 pm

Hi Alison

Radiomuseum suggests this is a stereogram from 1960.

I don't know what kind of capacitors it uses but the symtoms you describe suggest you have leaky caps.

Some pictures of the underside of the chassis would give us a clue.

Cheers

Mike T

Nuvistor · 23rd Nov 2017, 5:58 pm

The circuit for the 357/S chassis is available from the Service Data link at the top of the page.
Note not a full manual just circuit diagram.
http://www.service-data.com/product.php/101/258/c10101

Perhaps the same as what you already have.

paulsherwin · 23rd Nov 2017, 6:21 pm

Bad valves are almost never responsible for these faults. Beginners always think that changing random valves will provide a magic fix, but as you've discovered, it doesn't.

If you have no expertise with this sort of technology then it may be better to pay someone to sort out the problems for you. You can ask for professional help in this section of the forum.

You are welcome to try to sort it out yourself, and forum members are a very helpful lot, but there will be a steep learning curve.

23rd Nov 2017, 5:13 pm	#1
AlisonW Retired Dormant Member Join Date: Jan 2015 Location: Cardiff, Glamorgan, UK. Posts: 4	Ace Sheerline Radiogram. Chassis No. 357/S. Hi everyone. Just acquired the above. It has a Monarch deck attached. It is driving me mad. Just changed the output and preamp valves. Still a really bad sound from the radio and record player, very distorted. Also when I turn the tone down the volume goes down too. I cannot find anything about this radiogram online as the only ID on it is the chassis. I would really appreciate your help. I have found quite a basic schematic but it doesn't seem much help.

23rd Nov 2017, 5:34 pm	#2
Cobaltblue Moderator Join Date: Dec 2010 Location: Exeter, Devon and Poole, Dorset UK. Posts: 6,869	Re: Ace Sheerline Radiogram. Chassis No. 357/S. Hi Alison Radiomuseum suggests this is a stereogram from 1960. I don't know what kind of capacitors it uses but the symtoms you describe suggest you have leaky caps. Some pictures of the underside of the chassis would give us a clue. Cheers Mike T __________________ Invisible airwaves crackle with life or at least they used to Mike T BVWS member. www.cossor.co.uk

23rd Nov 2017, 5:58 pm	#3
Nuvistor Dekatron Join Date: Aug 2013 Location: Wigan, Greater Manchester, UK. Posts: 9,433	Re: Ace Sheerline Radiogram. Chassis No. 357/S. The circuit for the 357/S chassis is available from the Service Data link at the top of the page. Note not a full manual just circuit diagram. http://www.service-data.com/product.php/101/258/c10101 Perhaps the same as what you already have. __________________ Frank

23rd Nov 2017, 6:21 pm	#4
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,949	Re: Ace Sheerline Radiogram. Chassis No. 357/S. Bad valves are almost never responsible for these faults. Beginners always think that changing random valves will provide a magic fix, but as you've discovered, it doesn't. If you have no expertise with this sort of technology then it may be better to pay someone to sort out the problems for you. You can ask for professional help in this section of the forum. You are welcome to try to sort it out yourself, and forum members are a very helpful lot, but there will be a steep learning curve.