I have an old M-Audio NRV10, using a Firewire interface. It's in a cold environment and refuses to connect with the PC immediately when powered on. I replaced a couple bulging caps on the power supply and near the PLCC "chip field" on the PCB close to the Firewire connector, to no avail. In leaving the bottom plate off, I discovered if I warm that general area with my heat gun, it responds by connecting right away - and stays connected indefinitely after the heat is removed.
Obviously I'd like to put the mixer back together again, as it is now an open chassis set upon a piece of plywood. Handy to point the nozzle in there to deliberately warm those components, but hardly in a shape I would want to leave permanently.
Anything I can do? Or is it just the nature of these, certain, high speed digital chips to not work when it's cold. There's a couple 3 terminal parts close by and I read 3.3V, when a connection was active. Unsure if those could be suspect as root cause. Thanks for considering my problem!
Obviously I'd like to put the mixer back together again, as it is now an open chassis set upon a piece of plywood. Handy to point the nozzle in there to deliberately warm those components, but hardly in a shape I would want to leave permanently.
Anything I can do? Or is it just the nature of these, certain, high speed digital chips to not work when it's cold. There's a couple 3 terminal parts close by and I read 3.3V, when a connection was active. Unsure if those could be suspect as root cause. Thanks for considering my problem!
I had a faulty TL431 reference in an SMPS - highly temperature-dependent. When the SMPS warmed up, the reference => output voltage dropped to less than a half, causing the powered device to fail. Maybe your issue is similar - a temperature-dependent power supply, causing undervoltage when cold.