Re: Sudden death of the HP 239X terminals by whiskering

2018-06-06 Thread Ed Sharpe via cctech
Probably best  to  do this  clean up on the chassis  before applying power to prevent  whiskers  from  conducting to   easy to destroy components?   thanks  for the heads up...   ed# www.smecc.org    In a message dated 6/6/2018 3:41:29 AM US Mountain Standard Time, cctech@classiccmp.org writes:

Sudden death of the HP 239X terminals by whiskering

2018-06-06 Thread Rik Bos via cctech
Inspecting a newly acquired HP 2392A I found out the chassis was prone to whiskering all over the chassis. Whiskers are small metal hairs growing from pure metal (zinc or tin) and can when they connect to a power line create a shortage and electric arc damaging the electronics. Made some