Mullard HS Valve Tester Unsatisfactory feature - UK Vintage Radio Repair and Restoration Discussion Forum

Alf Fisher · 21st May 2020, 5:29 pm

My MHSVT has the usual cover that holds the card index but IMHO the way it is attached is not ideal and I'm wondering if anyone has a better method of fixing it.

The only thing holding it weakly in place are a pair of little Terry clips around the rear of the chrome handles. When you open the cover, the weight of it causes it to fall backwards and detach the Terry clips.
If you happen to have a card in the slot it would be snapped off!

Is mine the only one like this or has anyone got a mod to make the card index remain in place and usable when the cover is opened.

Alf

Horris · 21st May 2020, 5:37 pm

Mine does the same.To cure it I put a small cable tie across the backs of the Terry clips

Dave

Electronpusher0 · 21st May 2020, 6:57 pm

To be honest I do not bother fixing mine at all. When not in use it just sits on top keeping the dust off. When in use I lift if off and put aside.

Peter

Alf Fisher · 23rd May 2020, 4:55 pm

Thanks for your replies guys.

I thought about it for a bit and then decided a modification was in order so I bought a couple of M10 x 20 mm aluminium spacers off eBay.

On the bracket, I drilled out the pop rivets and removed the little Terry clips opening the holes to 5 mm. Then I drilled and tapped 2BA holes in the side of the spacers and its really solid. I'm very pleased with the result as you will see from the photo.

Alf

PJL · 23rd May 2020, 5:11 pm

Later models get rid of the lid altogether and put the list on a vertical pullout drawer.

21st May 2020, 5:29 pm	#1
Alf Fisher Hexode Join Date: Sep 2005 Location: Potton, Bedfordshire, UK. Posts: 293	Mullard HS Valve Tester Unsatisfactory feature My MHSVT has the usual cover that holds the card index but IMHO the way it is attached is not ideal and I'm wondering if anyone has a better method of fixing it. The only thing holding it weakly in place are a pair of little Terry clips around the rear of the chrome handles. When you open the cover, the weight of it causes it to fall backwards and detach the Terry clips. If you happen to have a card in the slot it would be snapped off! Is mine the only one like this or has anyone got a mod to make the card index remain in place and usable when the cover is opened. Alf

21st May 2020, 5:37 pm	#2
Horris Hexode Join Date: Nov 2006 Location: Colchester, Essex, UK. Posts: 397	Re: Mullard HS Valve Tester Unsatisfactory feature Mine does the same.To cure it I put a small cable tie across the backs of the Terry clips Dave

21st May 2020, 6:57 pm	#3
Electronpusher0 Nonode Join Date: Jun 2016 Location: Bognor Regis, West Sussex, UK. Posts: 2,296	Re: Mullard HS Valve Tester Unsatisfactory feature To be honest I do not bother fixing mine at all. When not in use it just sits on top keeping the dust off. When in use I lift if off and put aside. Peter

23rd May 2020, 4:55 pm	#4
Alf Fisher Hexode Join Date: Sep 2005 Location: Potton, Bedfordshire, UK. Posts: 293	Re: Mullard HS Valve Tester Unsatisfactory feature Thanks for your replies guys. I thought about it for a bit and then decided a modification was in order so I bought a couple of M10 x 20 mm aluminium spacers off eBay. On the bracket, I drilled out the pop rivets and removed the little Terry clips opening the holes to 5 mm. Then I drilled and tapped 2BA holes in the side of the spacers and its really solid. I'm very pleased with the result as you will see from the photo. Alf Attached Thumbnails Last edited by Alf Fisher; 23rd May 2020 at 4:57 pm. Reason: Inserted missing words

23rd May 2020, 5:11 pm	#5
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Mullard HS Valve Tester Unsatisfactory feature Later models get rid of the lid altogether and put the list on a vertical pullout drawer.