Thanks for the insight Paul. I am familiar with parts removal, and would
probably have determined the best course of action would be destroying the
cap and removing the individual legs one at ta time. I will need to study
up a bit on the ground connections. i'm sure it will be very clear if and
when I get to that part of the board.
On Thu, Dec 4, 2014 at 3:11 PM, Paul Amaranth paul@...
[TekScopes] <TekScopes@...> wrote:
If you can't get to that file, I think I have a copy around that I could
mail you. It's a good writeup.
The big fun comes in replacing the cap. The PCB is easy to damage. It's
probably easiest to disassemble things a bit so you can cut the offending
cap off at the board level, then desolder the terminals. The can is a
big heat sink and if you desolder it intact, there's a tendency to use too
much heat which lifts a PCB pad or two (although it can be done).
I'm probably getting ahead of things here, but as Tom mentioned, if you
replace the cap, you'll have to jumper the 3 negative terminals on the
PCB; Tek used the can as a jumper. When I do this, I use a little adapter
PCB that lets me plug in a snap cap and matches the pinout of the old
cap. Totally unnecessary, but it makes for a nice repair.
You can tell that lots of people have dealt with this problem, so don't
be shy about asking questions.
Paul
On Thu, Dec 04, 2014 at 02:41:42PM -0500, 'Tom Miller'
tmiller11147@... [TekScopes] wrote:
There is a file in the files section called Tek 465 Power Supply
Capacitor Replacement Guide.pdf that might help you find what you need.
Since the yahoo boobs went to neo, I am unable to open the file, so good
luck.
In any event, the capacitor has three negative terminals in a circle.
the positive terminal is within the circle.
- -
+
-
Watch your fingers when making measurements in this area or it can bite
you.
Also, when and if you go to change this cap, the capacitor can and the
three contacts are a part of the circuit. Also, you dont want to pull the
track and the plated through holes out when removing the bad cap. Come back
for some more advice when you get to that point.
Regards,
tom
----- Original Message -----
From: Kevin Crossett kcrossett@... [TekScopes]
To: TekScopes@...
Sent: Thursday, December 04, 2014 2:20 PM
Subject: [TekScopes] Re: Tek 465B woes
Makes sense. I'll report back my findings as soon as I locate a cap and
solder it on.
[Non-text portions of this message have been removed]
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows
[Non-text portions of this message have been removed]
