The clock in my newish (1990) wasn't working so I decided to have a go at it. Solder joints seem to be the main problem so I took mine apart so have a look. It has the 2 piece pcb so I split it by unsoldering the connections at the H and M end, 3 on each side which let me separate them.  Using an iron and thin solder I resoldered every joint I could see, I didn't bother unsoldering anything first as the new solder mixed with the old. Took about 10 minutes. Put it back and it worked! That was yesterday. Today a friend with a 1992 300 came in with the same problem. His clock has a one piece pcb. Same plan, resolder everything in sight.  Again, it's working. I mess about with Marshall amps and 99% of the problems are bad solder joints so I was happy enough that these clocks would be the same. You really need an iron with a fine tip and thin solder, plus a solder sucker can be useful. Fingers crossed but no reason to think it won't last.

Nice work Dusty ?

1 hour ago, Gaz 300 said:

Nice work Dusty ?

Thanks, a very satisfying outcome!

Nice work sir......

AndyP used to be the club's fixer of clocks - I don't suppose you'd consider offering your services to other members, would you?

22 hours ago, RichardS said:

Nice work sir......

AndyP used to be the club's fixer of clocks - I don't suppose you'd consider offering your services to other members, would you?

Haha, thanks but I'll quit while I'm ahead! No, it's an easy fix (if the problem is dry solder). Anybody with an iron could resolder all the joints in a couple of minutes. And I'd expect that to be the issue in most cases.

Failed ones sell for pennies on ebay and the like. You could make a small profit but buying, repairing, then offering an exchange basis for members. Not everyone is happy opening and soldering. ?

3 hours ago, Lexx said:

Failed ones sell for pennies on ebay and the like. You could make a small profit but buying, repairing, then offering an exchange basis for members. Not everyone is happy opening and soldering. ?

My main problem is living in Ireland. There is a guy selling 7 non working clocks on ebay for £47.50. Add post and taxes at £31.33 and it's £78.83 or nearly €100. Figures get a bit messy at that stage. And that's presuming they're all fixable.

I'd be more open to having broken ones sent direct to me and having a go for nothing outside the postage cost of returning the clock, fixed or not. But therein lies a minefield methinks!