Ok quick question. does anyone know the exact value of the ceramic disc capacitors (or are they film in disguise) in the BBC Master motherboard. The one in particular im looking to replace as its damaged is the one closest to IC42 the ULA. as it has a small chunk missing, even though it tests out at 0.3uF and is marked 3332, this doesn't really tally up with what they test out as and having a 4 digit code is throwing me. no other marking i can see other than what looks like branding a stylised square with a M and 40.
they also seem large (8mm) for a ceramic disk cap of that rating. i have some in my stash but they are physically a lot smaller. so if any can point me to where i can order similar sized and rated ones. as i need to replace this before i can use the machine.
they also seem large (8mm) for a ceramic disk cap of that rating. i have some in my stash but they are physically a lot smaller. so if any can point me to where i can order similar sized and rated ones. as i need to replace this before i can use the machine.
Statistics: Posted by Cerberus73 — Fri Dec 26, 2025 2:03 am