synthparts wrote:Are there tantalum bypass caps on there?
sam wrote:This is such a strange fault..If i connect only the power to the KLM354 the -ve rail takes around 10 seconds to go down to 0 volts.
The other boards are stable except the KLM355.
Seems like the power supply is failing somehow and i have checked it out and it should work.
However this has once been a 110 v...There is a new transformer but the voltage of the secondary windings are 25v ac even when the -ve rail fails.
I have never seen anything like this before....Any pointers please...
sam wrote:So Far....SSM chips are not a problem and i replaced all the tantalums..
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