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erazmus's Photo


Member Since 9 Jan 2009
OFFLINE Last Active Jan 12 2015 11:09 PM

Posts I've Made

In Topic: Question for Sloopy

Thu Aug 29, 2013 11:34 AM

Wow, I think the moral of this thread is "If you're in to Atari 8-bits, don't get married"

In Topic: 600XL or 400? I can't decide which one to get?

Tue Aug 13, 2013 11:28 PM

That is something that I never knew. After all these years, I learned something new about the 400! Thanks.

In Topic: Keyboard Dead

Tue Aug 13, 2013 12:43 PM

Result! Congrats.

In Topic: Keyboard Dead

Tue Aug 13, 2013 11:07 AM

Looking at a 130xe schematic which I found here:


I would use a meter to check continuity from the keyboard connector to U24 and U25 (4051) (page 6 of the schematic). Then I would check from U24,U25 to POKEY. If you check continuity from the top of the board, with the chips plugged in, by touching the top of the IC leg, this will make sure that there's no break in the trace from a bad via or anything. Possibly U24, U25 is bad? Do other POKEY functions work, like the pot inputs, sound, etc?

In Topic: Keyboard Dead

Tue Aug 13, 2013 10:48 AM

grinding off the precision socket

Ouch, ouch, ouch. The XE boards are terrible for traces lifting with too much soldering iron heat. Did the through plating survive? Perhaps in the process of removing the socket, you tore out a through hole plate, thereby disconnecting a top trace from a bottom trace?