Hi,
I'm posting to share some of my experiences in case they are of use to
others. I own a US-made Xpander for about 6 years now. It seems that
once every few years I see issues where the Xpander crashes or fails
to boot. Every time I have been able to "fix" this by re-seating the
ROM IC's on the processor board. By re-seating I mean pulling the ROMs
from their sockets and putting them back in. Folklore has it that this
helps scrape corrosion from the IC pins and/or the sockets.
I just went through this procedure again but this time I experienced a
new problem: after re-seating the main processor ROMs, the menu was
working fine again but there was no sound. I was also unable to tune
the synth; it would hang on VCO 1.
I tried the VMEM test and this hung on "TESTING" (which is supposed to
take less than 20 seconds). There are also two ROMs and one RAM on the
voice board. Because the hanging VMEM test pointed to those IC's, I
re-seated them. This restored normal operation: sound is back, tuning
passes.
Does this sound familiar to anyone?
Re-seating IC's does not feel like a proper fix to me but it's very
little effort and the problem does not happen enough to make me want
to spend more time on it.
Cheers, Jacob
