2MB RAM for Amiga 500 Repair help

[jedcooper]

Hello!

Got a Roßmöller 2MB expansion in a A500.
http://amiga.resource.cx/exp/search.pl?product=&company=ro%DFm%F6ller#a2mb500 - A2MB-500
Unfortunately some cables aren't soldered on their position anymore.
The manual says how to solder them, but only for normal Agnus chips. I have a 8375.
What now?

!!BTW!!: Are there known issues DF1 external drives not working anymore with 2MB RAM adaptor or is it only because of wrong jumper setting/missing cables?

The RAM works, but no external drives.

[jedcooper]

Drive DF0 internal alone working fine.
it was something like accessing DF1 then BOTH drives were accessed at the same time on same tracks I guess. weird

for the RAM issue: so i follow the manual for the big fat agnus mentioned 8372 (which is compatible to built-in 8375)?#

Cause disk access iirc has to do with the gary, and this RAM expansion uses the gary I thought the issue might come from not yet connected/soldered cables maybe?