Re: UD3 ROM on a 3032

From: Mike Stein <>
Date: Mon, 6 Feb 2017 13:52:18 -0500
Message-ID: <8ADB5BF8935E4C13B16940E85061D126@310e2>
It's not cheap, but here's a product I highly recommend for contact problems:

In more years than I want to remember I've never had to replace a socket unless it was damaged in some way.

When I was selling and supporting custom systems running in a very hostile industrial environment I would have an IC-socket related service call every few weeks, which stopped completely after treatment.

The only issue I have observed in my 2001 series PETs is that with any handling (flexing) of the board a chip will occasionally tend to creep out of its socket.

Probably not economic for a single application, but I thought I'd mention it anyway.


----- Original Message ----- 
From: "Francesco Messineo" <>
To: <>
Sent: Monday, February 06, 2017 12:55 PM
Subject: Re: UD3 ROM on a 3032

> On Mon, Feb 6, 2017 at 6:51 PM, Christian Dirks <> wrote:
>> Am 06.02.2017 um 08:23 schrieb Francesco Messineo:
>>> Changing all the 40 pins one will be a long job anyway :(
>> If you have the usual white sockets, it can be done very easy.
>> The white plastic carrier can be lifted off with a screwdriver, leaving
>> the solderd pins in the PCB.
>> After that, the pins can be desoldered one by one.
> sure, I noticed that. However the holes have to be cleaned anyway one
> by one. So with the desoldering station, the time is about the same.
> It's just a pity that a PET has to be "tweaked" this much to render it
> reliable, while a typical VIC-20 or C-64 is much more reliable even
> with the original sockets.
> Anyway, my 3032 is now working since hours with only the ROM sockets
> changed, I only need to test the IEEE port once I get a replacement
> MC3446 driver.
> Frank
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Received on 2017-02-06 19:01:50

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