Well, I plugged in the boards and powered up the computer, and
promptly powered it down after a few loud pops - D'Oh! Nothing was
displayed on my teminal connected to the console serial line. The affected
boards are the CPU board and a serial board - some tantalum capacitors
blew. I'm assuming they're tantalum caps- they're not electrolytic
can-style, or ceramic disc-style, but look like a gob of shiny blue acrylic
paint on two leads. The board marks which lead is +.
Are these tantalum caps common enough to buy at the local electronics
shop? We've got Radio Shack, but I heard they are overpriced. The caps to
be replaced were in the uF range.
BTW this is a complete system and the cards are arranged (from low
slot # to high slot #): CPU, RAM, FD controller, Serial/Parallel,
Terminator. Will check with documentation that RAM and ROM banks, and I/O
is configured right once I get the boards fixed.
Thanks,
Edwin
At 11:08 PM 6/2/2001 -0400, you wrote:
Yes, I have done that. Another good trick when
creating shorts is to
cause a tantalum capacitor to burst into flames. Maybe we should start
a thread on what kind of fire extinguishers people recommend.
Louis