On Thu, 2009-04-30 at 12:32 +1200, falco at ihug.co.nz wrote:
My real question is - 9 faulty out of 48, spread
across both machines,
seems very high. Are 4116s that unreliable? Or perhaps they're quite
sensitive to power supply problems?
Even in the early 80s when 4116es weren't especially cheap, I always
replaced all eight in ZX Spectrums, and the tranny in the DC-DC
converter. It saved a lot of bounced repairs.
If one goes, the abnormal load it presents on the power supply seems to
spack the rest in short order.
Gordon