• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

PCB in components

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Disabled Account
Joined 2010
Hi,

From a previous thread I thought I would put this on the forum.

Polychlorinated biphenyl - Wikipedia, the free encyclopedia

Some old equipment pre 1978 may contain this chemical. A lot of people are already aware of this! If not please read the link.:)

It is an oil type substance used in transformers and old capacitors. If you have a leak from old equipment and you are not sure if it is mineral oil it may be PCB.

Regards
M. gregg
 
Last edited:
Disabled Account
Joined 2010
Nasty nasty nasty stuff... watch out for Capacitors branded "Visconal"

mind you ... people still insist on using mercury recs...


Yes it is! Most equipment using it was taken out of service, however old capacitors and some expensive non leaking equipment has been left in service due to no leaks and cost!

If you get it on your skin it seems to evaporate, however it has gone in not evaporated!

Just thought I would bring it to people’s attention!

Regards
M. Gregg


 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.