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Re: Electrol level 1

JR
John R. Lebetski
Sat, Jun 5, 2021 6:35 PM

There was a thin sheet of foam under there rocker buttons to keep dust out of switch.  Some time it the 80s it turned to chemical goo much like the
foam backing on GM headliners of that period. Stuff stains fabric like a tar and hard to get off hands.  The switches have actual points contacts,
very well made, but  goo will insulate them.  Simply spraying contact cleaner did not work. Had to be scraped off contact points. But you can remove
the panel with 3 switches, unplug connectors and check switches with an Ohm meter on BEEP as you would any DPDT switch from center to outsides on both
sides. If good then that is mot the problem.

John Lebetski
Woodstock, IL
77 Eleganza II

There was a thin sheet of foam under there rocker buttons to keep dust out of switch. Some time it the 80s it turned to chemical goo much like the foam backing on GM headliners of that period. Stuff stains fabric like a tar and hard to get off hands. The switches have actual points contacts, very well made, but goo will insulate them. Simply spraying contact cleaner did not work. Had to be scraped off contact points. But you can remove the panel with 3 switches, unplug connectors and check switches with an Ohm meter on BEEP as you would any DPDT switch from center to outsides on both sides. If good then that is mot the problem. -- John Lebetski Woodstock, IL 77 Eleganza II
KB
Ken Burton
Sat, Jun 5, 2021 11:37 PM

John, While a ohmeter check should show an open on the switch contact(s), I prefer to check them using voltage and under load.  I few 1/10ths of an
ohm on a contact under load will cause enough voltage drop to cause a failure. A few 1/10ths of an ohm will usually be over looked and can sometimes
cause the meter to beep in continuity check mode.  The other thing as preventative for future switch contact problems, I prefer to tell people just
clean the contacts.  That is clean, not just spray them with cleaner.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

John, While a ohmeter check should show an open on the switch contact(s), I prefer to check them using voltage and under load. I few 1/10ths of an ohm on a contact under load will cause enough voltage drop to cause a failure. A few 1/10ths of an ohm will usually be over looked and can sometimes cause the meter to beep in continuity check mode. The other thing as preventative for future switch contact problems, I prefer to tell people just clean the contacts. That is clean, not just spray them with cleaner. -- Ken Burton - N9KB 76 Palm Beach Hebron, Indiana