HMV 1134 Radio Restoration - UK Vintage Radio Repair and Restoration Discussion Forum

stuboy57 · 8th Jun 2017, 3:16 pm

Bit the bullet ...just had to buy this radio just up the road from me, and paid £15.00.. think it's a lovely design and reminds me of the one I had in my bedroom as a kid when I was about 8 in the mid 1960's.

Never had a go at anything like this and could be quite a project to undertake, not even going to plug it in, just look at the last image...looks like something has blown!!....when I took the back off this is how it was.....
so will be looking for a lot of advice on testing and items to replace
thanks in advance

MALC SCOTT · 8th Jun 2017, 4:23 pm

The blown part looks like the mains filter cap. Remove it. Wont affect sets performance.

paulsherwin · 8th Jun 2017, 4:56 pm

It's actually quite a good choice for a first VHF restoration. I would advise getting the AM side of things working before looking at the FM aspects. If you're lucky it will just need a good clean and some new caps.

Attractive set.

crackle · 8th Jun 2017, 5:02 pm

Change the audio coupling capacitor C52 0.001uF (Trader) then connect to lamp limiter (40 watt lamp if not using a variac) and check the HT voltage as it rises.
Connect an aerial, switch to MW, check smoothing caps are not getting warm and mains transformer is cool. With the volume up full you should start to hear some hiss or hum in the speaker, and maybe a station or two. HT voltage should be about 100 volts or more.
If all OK, change to a 60 watt lamp, now you should be getting some stations and HT should be up to maybe 160 volts.
The 60 watt lamp should be fairly dim.
Try switching out the lamp limiter after a few hours of soaking on reduced voltage and go round checking all the voltages on the valves.

Personally I always reform the main electrolytics using a home made reformer.

Mike

stuboy57 · 17th Jun 2017, 10:15 pm

Thanks for the replies. Where is the best place to buy this capacitor? I hope to have a closer look this coming week and proceed with caution.

8th Jun 2017, 3:16 pm	#1
stuboy57 Retired Dormant Member Join Date: Feb 2017 Location: Peterborough, Cambridgeshire, UK. Posts: 86	HMV 1134 Radio Restoration Bit the bullet ...just had to buy this radio just up the road from me, and paid £15.00.. think it's a lovely design and reminds me of the one I had in my bedroom as a kid when I was about 8 in the mid 1960's. Never had a go at anything like this and could be quite a project to undertake, not even going to plug it in, just look at the last image...looks like something has blown!!....when I took the back off this is how it was..... so will be looking for a lot of advice on testing and items to replace thanks in advance Attached Thumbnails

8th Jun 2017, 4:23 pm	#2
MALC SCOTT Octode Join Date: Aug 2006 Location: Willington, County Durham, UK. Posts: 1,499	Re: HMV 1134 Radio Restoration The blown part looks like the mains filter cap. Remove it. Wont affect sets performance. __________________ Malc Scott

8th Jun 2017, 4:56 pm	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,947	Re: HMV 1134 Radio Restoration It's actually quite a good choice for a first VHF restoration. I would advise getting the AM side of things working before looking at the FM aspects. If you're lucky it will just need a good clean and some new caps. Attractive set.

8th Jun 2017, 5:02 pm	#4
crackle Rest in Peace Join Date: Mar 2011 Location: Basildon, Essex, UK. Posts: 4,100	Re: HMV 1134 Radio Restoration Change the audio coupling capacitor C52 0.001uF (Trader) then connect to lamp limiter (40 watt lamp if not using a variac) and check the HT voltage as it rises. Connect an aerial, switch to MW, check smoothing caps are not getting warm and mains transformer is cool. With the volume up full you should start to hear some hiss or hum in the speaker, and maybe a station or two. HT voltage should be about 100 volts or more. If all OK, change to a 60 watt lamp, now you should be getting some stations and HT should be up to maybe 160 volts. The 60 watt lamp should be fairly dim. Try switching out the lamp limiter after a few hours of soaking on reduced voltage and go round checking all the voltages on the valves. Personally I always reform the main electrolytics using a home made reformer. Mike

17th Jun 2017, 10:15 pm	#5
stuboy57 Retired Dormant Member Join Date: Feb 2017 Location: Peterborough, Cambridgeshire, UK. Posts: 86	Re: HMV 1134 Radio Restoration Thanks for the replies. Where is the best place to buy this capacitor? I hope to have a closer look this coming week and proceed with caution.