Marshall G50R CD , practise amp, 1999

I replaced the troublesome 1/4 jack in a couple of those but don't remember any conundrums.

--
Live Fast, Die Young and Leave a Pretty Corpse

Perhaps you have the knack of pushing inwards these coupled together black

2part cable grips and then replaced them from the outside. I don't remember coming across a situation of having to push one inwards to release, rather than compressing with mole-grips and pulling from the outside.

I wish it was a little clearer in memory but I don't recall anything of notability besides the 1/4 jack was red on the end.

--
Live Fast, Die Young and Leave a Pretty Corpse

Please don't take this as a put-down or flame, because that's not my intention. I respect your technical expertise and troubleshooting ability, but when I read one of your posts, I have to read it several times before I can figure out what you're talking about. Your sentences are poorly constructed, and many times incomplete. It's a challenge for me to understand the problem, what you're trying to accomplish. Maybe others here in the group have the same problem and are reluctant to reply. There; now that's out of my system.

I'm not familiar with the amp, and it's hard to visualize what you're talking about, Are you having trouble removing and reinstalling a cable strain relief, such as the ones shown on a Mouser catalog page

If so, there are tools (pliers, actually, and shown on the same catalog page) that are specially built for that task, and they work quite well, with no damage to either the chassis, the cable or the strain relief. The tools are a bit pricey, but they are worth the cost if they save you a few hours of labor over such a simple job. Don't know if any of the vendors in your area have these in stock, but Mouser does ship overseas.

Cheers,

--
David
dgminala at mediacombb dot net

( snip rest of this incomprehensible drivel)

** Mr Nutcase Kook is incapable of writing clear English - or thinking it.

The first sentence of his post ( see above ) is a nice example of how not to write.

.... Phil

ability,

I

here

Those are installation tools , maybe useable as extraction tools but doubtfully for the "blind" side extraction. No way they could be used at manufacture of these Marshalls even with absent heatsink and transformer ,without a serious bend in the shanks and probably longer shanks to clear the case metalwork

No red-ended ones on this model

Someone has taken a pic

The speaker leads enter between number 2 and 3 white pillared W/W resistors, calling number 1 at the foreground. The underside metalwork is 1/2 inch below the pcb but somehow the strain relief clamp is inserted in that gap surrounded by the h/s and Tx underside metal etc

resistors,

And just to clarify. Before you can remove the pcb you have to remove the speaker wire clamp as the wire has no slack between clamp and pcb loop anchor. Another manufacturing possibility is that foreground end face of the casing is not bent right-angled into shape until completing the speaker wiring, it is not fixed/spot welded at the corners, then you could use a standard insertion tool.

I've replaced the LM Power Amp IC on several of these. The cable clamp grommets were on the right way round and no doubt fitted last, as thats the only way they will go on.

Maybe the aliens did it. Or its some kind of Chinese assembly line joke.

Gareth.