Share your knowledge on these two classic MPCs
By lumin Wed Sep 13, 2006 7:42 pm
i need a quick explanation of how to do what forat said to do
what kind of scope do i need and how do i check the connections?

the emails are below. the one on top is forat's response:

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The mod will not cause this problem unless some of the pins did not get soldered correctly to the bottom IC's and you would need to use a scope to check for that unless it's obvious by looking where a pin might not have any solder on it at all. If you know someone that can solder good, have them resolder all of the pins and see what happens.
Bruce
-----Original Message-----
>From: Lumin !
>Sent: Sep 6, 2006 11:13 AM
>To: [email protected]
>Subject: mpc 60 scratchy output/memory situation
>
>mr forat
>I have been having problems with a scratchy output on my mpc 60. it
>doesnt have anything to do with the outputs themselves. its more of a
>strange noise that intermittently arises when a sample is being played
>back. it happens pretty randomly and ends up ruining my mixes when they
>are being recorded. One day i decided to open up the unit and much to my
>surprise, i was looking at a rewire job of which i am sending a picture
>of. i got on the internet and shows some folks what was going down. come
>to find out that this is a cheaper work around to the memory upgrade.
>noone had seen this type of setup and they suggested i contact you to
>see if you have some input on what to do. they mentioned that whoever
>did this modification knew what they were doing. i do have the 26.2
>seconds of sample time and havent had a problem with that even though i
>do not have the memory upgrade.
>since ive showed this online, there has been a website which has posted
>a step by step on how to do this hack but the wiring is soldered to a
>different area than how mine is.
>all i want is to not have this random scratchy noise to pop up on my
>samples.
>if you can help, it would be greatly appreciated. if it needs service,
>please tell me how much the service would cost.
>
>thanks
>lumin
>
>www.oddinhuman.com
>www.myspace.com/lumin

By engineer Thu Sep 14, 2006 3:12 pm
open the thing up, check all the spots where the memory hack is soldered, if any look suspicious resolder them. If you don't know how to do that, google on how to solder. Better yet find someone who can cause it's dangerous if you're not careful/inexperienced. There's a link in the MPC60 bible (which is stickied at the top of this forum) about the memory hack as well if you need any information about that.
_________________
www.myspace.com/texasthom

By lumin Thu Sep 14, 2006 4:34 pm
thanks
im pretty familiar with the hack
i just needed to know how to check each chip with a scope... like what kind of scope i needed and how to use it
ill be checkin the chips for unsoldered sections though

By engineer Thu Sep 14, 2006 6:51 pm
just look and see if it looks corroded/rusted/unusual. If nothing looks strange just try resoldering everything. Also I guess make sure that what's actually soldered is correct too. If that doesn't work it's probably something else.

By lumin Fri Sep 15, 2006 3:29 pm
i checked all the pins and soldered the ones that might have not been soldered correctly
still have the noise.
im just going to resolder everything
or if anyone has a memory upgrade, ill just cop that and be done with it