A 561 processor which has had ALL the electrolytic capacitors replaced as one of the power supply capacitors had a bulging top and was leaking. Luckily caught in time.
Running the latest v1.77 firmware.
PM me an email address and I am happy to send pictures.
Lounge: DSP5200, 518
Snug: DSP33 x 5, 518, C61R
Office: M33, 561