Vintage JTM-50 - S/11295 - 1968 - what it it worth? How to rennovate (if at all)

[redfish]

Dear All,

I have an old Marshall 50W amp that I havent played for many many years. I am a bit afraid to power it up ..... also needs the burgin connector updating.

Do you have any idea what it may be worth?

If I replace the burgin connector will it loose its value?

Also, would a referb of the casing and knobs add value (or decrease its value)?

Many thanks for any suggestions or ideas you may have.

Thanks - Red

 

[kuli]

Welcome to the forum!
Nice amp!
Don't change anything, if you are looking to sell, let the buyer change these things.
And we need to see some inside pictures, including removing the amp from the head and show us the insides.

 

[neikeel]

Yep, pictures - lots of them
It is Bulgin btw - and leave it alone - for now!

 

[redfish]

View attachment 87542 View attachment 87543 View attachment 87543 View attachment 87542 View attachment 87543 Dear All,

I have an old Marchal 50W amp that I havent played for many many years. I am a bit afraid to power it up ..... also needs the burgin connector updating.

Do you have any idea what it may be worth?

If I replace the burgin connector will it loose its value?

Also, would a referb of the casing and knobs add value (or decrease its value)?

Many thanks for any suggestions or ideas you may have.

Thanks - Red

 

[redfish]

some more pics from this morning .... probably hasnt seen the light of day for 50 years.

trying to make out the id of the signatute on the inspection label ..... I dont think its Rosemary .... any clues?

 

[redfish]

I think Jim Marshall May have even tested it ... does anyone recognise his signature on the "Test" label?

 

[neikeel]

I’m afraid Jim Marshall would not have a clue how to test an amp although I believe he was useful in the cab trimming team.
Looks like a 68 or early 69.
The amp has had work done evident by the replaced fuse holders and you can see that the output transformer is a replacement of long-standing.
When you get chance to pull the chassis out and photograph the circuit boards we can give you a comprehensive appraisal.

 

[TM1]

Nice amp! I’d love to play that

 

[redfish]

I'm going to take it to Marshall HQ next week to run it up ... see if it still works ..... I'm kinda excited and scared at the same time

 

[Seanxk]

Don't do that, they will ruin/devalue it by changing caps etc

They haven't got the time to run it up slowly either.

 

[redfish]

hmmmm .... ok I should clarify with them first - what they might do for their test. How would someone normally deal with starting up an amp slowly in this condition?

 

[redfish]

Is it better that I dont test the amp? I'm confused.

 

[redfish]

Is it better to pass on to a new owner and let them sort that out? Or is it more useful to pass on an amp that you know works?

 

[fitz]

Is it better to pass on to a new owner and let them sort that out? Or is it more useful to pass on an amp that you know works?

If you want to spend money to "make sure it works" and then turn around and sell it, you probably won't get your "make sure it works" money back in increased sale price.

 

[Seanxk]

There's no real benefit to taking it to Marshall, they will certainly get it running again, but it may not be to your advantage value wise in the work they do, for most people it would not add value and probably lessen it.
Where are you located?

 

[redfish]

There's no real benefit to taking it to Marshall, they will certainly get it running again, but it may not be to your advantage value wise in the work they do, for most people it would not add value and probably lessen it.
Where are you located?

well I'm only 10 miles away from the Marshall facility in Bletchley, UK

 

[Seanxk]

Hmm, that's quite close lol

 

[StuC]

well I'm only 10 miles away from the Marshall facility in Bletchley, UK

Don't take it to Marshall, whatever you do. They are not capable of sympathetic service or restoration work on vintage amps - the Bulgin will be replaced with an IEC to make it "safe" for a start. As Seanxk says, they'll get it working, but they will ruin its originality and it will be harder to sell to a serious collector. You'd do better to sell it as-is than spend money having Marshall decrease its value.

 

[redfish]

Don't take it to Marshall, whatever you do. They are not capable of sympathetic service or restoration work on vintage amps - the Bulgin will be replaced with an IEC to make it "safe" for a start. As Seanxk says, they'll get it working, but they will ruin its originality and it will be harder to sell to a serious collector. You'd do better to sell it as-is than spend money having Marshall decrease its value.

OK Thanks ... I appreciate the advice ... great to have a forum like this

 

[neikeel]

Which direction 10 miles from Bletchley?