PURE M3700 Bedienungsanleitung PDF herunterladen (Seite 14)

sweetbeats

Reel deep thoughts...

Join Date: Apr 2008

Location: Pacific Northwest, USA

Posts: 4,279

Rep Power: 1059333

I am not alone...

I feel like I'm watching my own thread on an M-3500 that I don't own.

You're freaking me out, Tim.

Nice job.

BTW, at least on the older ALPS pots on my prototype mixer and back in the M-500, M-300, M-200 etc. era there is

grease applied to the pot shaft to seal out dust from above. You start trying to soak cleaner through the top of the pot

and you are surely leeching greasy dirt into the pot. Plus, the resistive element typically faces the bottom of the pot

so I ask how can we expect to get cleaner on the resistive element by going in from the top anyway?

I put up a thread awhile ago about my thoughts about cleaning pots and I tend to do what I have to do to gain access

to each pot body so I can turn the pot sideways and jet cleaner in through the holes in the pot body, sweep the pot

and another jet to rinse. You want to get any crud off the wiper too...ain't gonna happen trying to get cleaner in from

the top.

Excessive? Sure, but I was repulsed at the idea of doing the work to try and get the stuff in there and have it not

take, and that was my experience doing it the other way with my M-520, which is what led me to my current

methods.

Caps...you're not asking but here are my thoughts after recapping a whole bunch of stuff...on a board the age of the

M-3500 I'm not sure I would recap anything except for the PSU (it is responsible for ensuring clean power to the rest

of your mixer, and dirty or unstable power is hard on everything else downstream...I have no quantitative data to

back this up, okay? But clean power has been demonstrated to have meaningful advantages), -OR- if you are having

problems and it seems cap related. But I'd recap the PSU. I use Nichicon PW series caps. Affordable, reliable,

well-made and readily available. Cheap quick job to recap that PSU.

Could you hear the difference if you did the whole board? Maybe, but I'm telling you I couldn't do it...I'm tired of

recapping, and I've never done anything as big as that mixer. That's...a...lot...of...caps. I love your idea and highly

recommend the "do a couple channels and A/B them" plan. Very revealing.

Those are nice faders.

Betcha for certain Teac in Montebello, CA. has a replacement for that busted pot.

Wow...the guts of that M-3500 look so much like the 388's guts...of course the 388's guts are far less complex, but

that's neat. Makes me like my 388 even more. The M-3000 boards are really nice. I've gotta piece of that nice in my

little 388...

Hey, Tim, have fun okay? Take it from me...eventually the fun of the refurbs gets cold...not that it can't warm up

again but I took too many refurb projects on at once and it spoils things.

You're doing a really nice job tho'.

03-01-2010

timkroeger

Custom Title User

Join Date: Feb 2010

Location: Germany

Age: 32

Posts: 152

Rep Power: 643608

Hey

Quote:

Originally Posted by sweetbeats

BTW, at least on the older ALPS pots on my prototype mixer and back in the M-500, M-300, M-200 etc. era

there is grease applied to the pot shaft to seal out dust from above. You start trying to soak cleaner through

the top of the pot and you are surely leeching greasy dirt into the pot. Plus, the resistive element typically

faces the bottom of the pot so I ask how can we expect to get cleaner on the resistive element by going in

from the top anyway?

Yeah, I figured that, so I didn't try to soak it through the pot shaft but instead tried to soak it through what I think

might be a small but accessable gab between the plastic body and the metal cover. I don't know if it took but I do

hope so. In the picture you can see where I tried to get it in.

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