NAD: It's here! AFD100 in the house!

[jpfamps]

Nope - no schematic Fernando.

I've subscribed to the Marshall forum so there's now at least three of us there with an issue.  Not good for Marshall is it?

Indeed not good.

From what gwEm says, sounds like it is a well-known problem with this sort technology, which would suggest that Marshall don't understand it fully.

I've logged into the "super secret" Marshall schematic service facility and there's no schematic there. I expect there won't be until it goes out of warranty.

Regarding the "Power Scaling", what I have gleaned is that the screen grid voltage and bias voltages are varied, rather than the plate, screen and bias voltages, and that this is controlled by some digital which has a number of stepped power levels, and this seems to be where the problem is.

As ever, using "cutting edge" approaches often reveals unexpected problems.

[Twinfan]

Well the amp's designer, Santiago, has joined the Marshall Amps forum and basically accused of whining  :roll:

If my fault wasn't intermittent I would have sent it back by now.  I'm trying to find a setting that triggers it to happen ALL the time so I can go to the factory and demo it.

[Philly Q]

Well the amp's designer, Santiago, has joined the Marshall Amps forum and basically accused of whining  :roll:

His response was remarkably unhelpful!

[Dmoney]

got a link to the marshall forum post? that's pretty uncool

[Twinfan]

The link to the thread is on page 10, here's the link to "Santiall" who is Santiago of Marshall:

http://www.marshallforum.com/marshall-amps/23918-afd100-problem-help-2.html#post314211

What part of "we've sent them back but Marshall fob us off that's nothing wrong" doesn't he undersatnd?  :?

[dave_mc]

yeah stop yer whining, dave, what do you expect from a £1200 amp, for it to work all the time? It's certainly unfair, on an amp of that price, to expect them to cough up a whole $5 per amp (assuming what jpf said was correct, and I see no reason to suspect it's not) for a powerscaling system which is actually known to work.

:lol:

[FernandoDuarte]

What a idiot!

[Dmoney]

Wow!

I just read it!
I mean... it defo got back to marshall? Sounds Great didn't just send it elsewhere?
as much as I dislike that company, I doubt they'd do that.

What if you put masking tape around the knob, then you could draw a little mark to line up the pot exactly to create the problem? might help if you need to get it spot on to recreate the fault?

It blows my mind that the designer signed up and came out with that. That alone is bad PR for marshall. Essentially accusing you all of making up the problem. You guys should all meet up and head down to Marshall HQ for a sit in!

[HTH AMPS]

The link to the thread is on page 10, here's the link to "Santiall" who is Santiago of Marshall:

http://www.marshallforum.com/marshall-amps/23918-afd100-problem-help-2.html#post314211

What part of "we've sent them back but Marshall fob us off that's nothing wrong" doesn't he undersatnd?  :?

if he worked for me I'd have banned him from posting on the company forum - he's not exactly a brand ambassador is he  :roll:

this needs sorted, but I can see why Marshall are denying anything is wrong - they don't want to create a scare, y'know - a few have the same fault, so they all must (AAAARRHHHH!!!!!!)

it'd be a shame if this can't be sorted, its a nice sounding amp.

[shobet]

I'd like to see him say that to your faces. What a tw@t.

Dave, when you go down to take it back can I come with you to watch. I'll eat some special curries so I can pass comment when required.

[Dmoney]

I'd like to see him say that to your faces. What a tw@t.

Dave, when you go down to take it back can I come with you to watch. I'll eat some special curries so I can pass comment when required.

I'll come too. It'll be like the Egyptian protests but with guitars and amps. way more rockin'!

[purpleplexi]

I wouldn't feel so bad if someone had said - 'well there might be an issue with the power control so we've stuck a new one in. Take it away and try it for a week' but to just keep saying they've tested it and there's nothing wrong solves nothing.

They can put as many meters on it as they want but I reckon I've been playing the guitar longer than that guy has been alive. If my ears tell me it ain't right then it ain't right.

[purpleplexi]

this needs sorted, but I can see why Marshall are denying anything is wrong - they don't want to create a scare, y'know - a few have the same fault, so they all must (AAAARRHHHH!!!!!!)

Realistically the more this goes on the worse it gets for Marshall which is not what I want. I've owned several Marshalls, I've used their service department because I live quite near and they've always been great. Ironically after the last amp (the one that blew spectacularly up) a big reason I went for this one was that I've never had an unreliable Marshall - new or used - and I knew that living nearby would enable me to get any issues resolved quickly and easily.

The guitar Gods must be laughing their asses off.

[Dmoney]

you should be entitled to a replacement right? under consumer rights legislation? If you'd had it back and the repair job wasn't up to scratch I'm pretty sure you can make a claim for a full refund (I went through this with my Soldano) but you'd have better luck getting a replacement.

4/1000 have failed that you know off... still good odds on getting a good one?

[Twinfan]

I'm not sure they'll honour a refund/replacement if they won't recognise that there's fault?

My amp definitely went to Marshall - I spoke to the repair tech who worked on it the first time, and the second time I spoke with the customer returns lady twice.

Purpleplexi - when are you supposed to be getting yours back?