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HP4195A can't start up, anyone familiar with this old budy?

Question asked by stewart_lee on Sep 20, 2007
Latest reply on Feb 4, 2008 by dhamilton
When powered on, the unit will have a 'beep' and the unlock LED lights up for a while and then off. Nothing comes up to the CRT, the HPIB doesn't work neither(can't find instrument on the bus). The keys are not functional.

It seems like a boot ROM failure or something else. Is it possible caused by backup battery failure?

Any hint is valueable!

Best regards  

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