Re: UD3 ROM on a 3032

It's not cheap, but here's a product I highly recommend for contact problems:
http://www.posthorn.com/Stab_2.html

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.

m

----- Original Message ----- 
From: "Francesco Messineo" <francesco.messineo@gmail.com>
To: <cbm-hackers@musoftware.de>
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 <Toast_r@idealine.info> 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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