Are you sure it's not just dirty? There's not a real high voltage around
there, maybe a 100 volts or less.
Disclaimer: I did not look at the manual.
?
?
Regards,
t
?
?
?
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----- Original Message -----
Sent: Thursday, September 20, 2012 11:44
PM
Subject: [TekScopes] Re: Have you seen
arcing around vertical output transistors?
?
I was wrong, they're to-39 parts.
Still- I think it's interesting
how they're arcing at the base of the pins. I also see an occasional arc in
the storage circuitry as well. I wonder if this is why tek went to a to220
part on later scopes?
Jamie
--- In TekScopes@..., "Jamie"
wrote:
>
> I bought a 5111 on ebay for
cheap and it mostly works but while working on it I noticed arcing around both
vertical output transistors. I thought no big deal, probably just cold solder
joints from heat cycling, right?
>
> It would appear that the
arcing is where the legs of the component enter the transistor. Has anyone
seen this before?
>
> It sure would explain the trace randomly
jumping around on the screen a bit!
>
>
Jamie
>
