'79 Marshall JMP 2204 Question

'79 Marshall JMP 2204 Question

Hey. I'm thing of buying a '79 JMP 2204; i have pictures of the circuit
board on photobucket:
http :// s273.photobucket,com /albums/jj209/adam l79/jmp%202204/
I've never seen a '79 with a blue circuit board.. I'm no expert, but it
looks like the preamp is NOT cascaded.. by looking at the pictures, am I
right or wrong? If I'm wrong and the preamp is cascaded, how does the
board look to you pros?

thanks,
-adam
adam79@toast,net

Re: '79 Marshall JMP 2204 Question

adam79 wrote:
>
> I've never seen a '79 with a blue circuit board.. I'm no expert, but it
> looks like the preamp is NOT cascaded.. by looking
Trace it for us.
My eye sight is poor.
Even better ... what do the knobs have written on them ?

Re: '79 Marshall JMP 2204 Question


"adam79" <adam79@toast,net > wrote in message
news:T7idnfZ0QKfYP63VnZ2dnUVZ_qTinZ2d@posted.toastnet...
> Hey. I'm thing of buying a '79 JMP 2204; i have pictures of the circuit
> board on photobucket:
> http :// s273.photobucket,com /albums/jj209/adam_l79/jmp%202204/
> I've never seen a '79 with a blue circuit board.. I'm no expert, but it
> looks like the preamp is NOT cascaded.. by looking at the pictures, am I
> right or wrong? If I'm wrong and the preamp is cascaded, how does the
> board look to you pros?
>

If it's a Marshall, it will have Marshall written on the circuit board.
I'll bet you this one was repaired way back when.


winnard

Re: '79 Marshall JMP 2204 Question

On May 18, 5:40 pm, adam79 <ada...@toast,net > wrote:
> Hey. I'm thing of buying a '79 JMP 2204; i have pictures of the circuit
> board on photobucket: http :// s273.photobucket,com /albums/jj209/adam l79/jmp%202204/
> I've never seen a '79 with a blue circuit board.. I'm no expert, but it
> looks like the preamp is NOT cascaded.. by looking at the pictures, am I
> right or wrong? If I'm wrong and the preamp is cascaded, how does the
> board look to you pros?
>
> thanks,
> -adam
> ada...@toast,net

Its had work done. The 68k grid stopper is right on the V1
socket.....thats the way it should be, but few mfgrs do it that way.

Re: '79 Marshall JMP 2204 Question

adam79 schrieb:
> Hey. I'm thing of buying a '79 JMP 2204; i have pictures of the circuit
> board on photobucket:
> http :// s273.photobucket,com /albums/jj209/adam l79/jmp%202204/
> I've never seen a '79 with a blue circuit board.. I'm no expert, but it
> looks like the preamp is NOT cascaded.. by looking at the pictures, am I
> right or wrong? If I'm wrong and the preamp is cascaded, how does the
> board look to you pros?
>
> thanks,
> -adam
> adam79@toast,net

clone, pcb not original
chassis hacked/modded
cascaded preamp
lead dress in the mains area sub par...



cheap?
sound?

if it's not chap or it dos not sound rally good, I'd stay away.


regards

Jochen

Re: '79 Marshall JMP 2204 Question

jh wrote:
>
> clone, pcb not original
> chassis hacked/modded
> cascaded preamp
> lead dress in the mains area sub par...
>
>
>
> cheap?
> sound?
>
> if it's not chap or it dos not sound rally good, I'd stay away.
>
>
> regards
>
> Jochen

that's what i was thinking.. orig. chassis w/ a cloned board. one quick
question.. how you can tell the preamp is cascaded by looking at the
circuit board.. on the board pictured, one of the the circuit board
sides has those 8 dots (not sure of the technical term) with no wires
connected to them. this is what my un-cascaded '77 JMP looked like; the
JMPs I've seen that I know were cascaded had wires attached to those
"dots" going towards the inputs. please shed some light on this for me.

thanks alot for the help.

-Adam
adam79@toast,net