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Old 10th Oct 2019, 9:44 am   #1
tritone
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Default Murphy A362 restore or not question.

Dear Forum,

I have a 1950’s Murphy A362 valve radio that was given to me and I would like some advice to whether I should take it upon myself to restore it or not.
On initial inspection there seems to be several oil/paper capacitors that are in very poor condition but at first sight most of the rest of the components seem to look ok.

I’ve noticed from the schematic that this piece of equipment operates on a live chassis, so with that respect I would use my isolation transformer when poking around in there when turned on.

I have never worked on radios before but I have fairly reasonable experience working with old valve musical amplifiers and tranny equipment and I do have some decent test equipment at my disposal including a 100Mhz scope and a 2Mhz sig-gen.

What do you think guy’s, do or don’t ? or would this be too big of a project for someone like me with zero experience working on valve radios ? It would be a great learning curve and a great achievement though for a first timer.

Many thank you’s in advance ladies and fellas.

Tritone.
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Old 10th Oct 2019, 9:48 am   #2
lloydwells
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Default Re: Murphy A362 restore or not question.

Hmmm well the chassis is of course only live if thats the side of the mains you have connected to it so make sure its connected the correct way round . the A362 is a funny set different valve types and heater voltages all over the place and the chassis isnt the best layout to work on however they are a cracking looking set and a good little performer when sorted .
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Old 10th Oct 2019, 9:49 am   #3
lloydwells
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Default Re: Murphy A362 restore or not question.

And no that's not a big project thats an evenings work change the caps they usually behave after that.
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Old 10th Oct 2019, 10:00 am   #4
tritone
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Default Re: Murphy A362 restore or not question.

Thank you lloydwells, thats great advice sir.
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Old 10th Oct 2019, 11:37 am   #5
lloydwells
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Default Re: Murphy A362 restore or not question.

Your welcome I have two dead ones if you run short of anything
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Old 10th Oct 2019, 12:41 pm   #6
stitch1
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Default Re: Murphy A362 restore or not question.

Hello,
I've restored an A372 (very similar) they're lovely sets. Apart from the obvious safety considerations and changing one cap at a time (starting with the audio coupler) you will needs lots of patience as there are dozens of brown hunts and mine didn't perform properly until they were all replaced and some very well hidden so it’s a fiddly job but worth it.

Good luck

John
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Old 11th Oct 2019, 6:13 pm   #7
tritone
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Default Re: Murphy A362 restore or not question.

Thank you,,

It's time to go parts hunting, wish me well,
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