¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: 2445 LVPS Issues


 

They are VERY FRAGILE! Do not apply much pressure or it just brakes.
I don't know how to remove it without braking it, sorry!

On Sun, Aug 4, 2019 at 7:13 PM n4buq <n4buq@...> wrote:

Got everything removed except the fan. Any hints/tricks to getting that
off? Loosened the nut but the fan blade won't budge and I don't want to
pull any harder unless it is recommended. I have a feeling that's some
kind of collet and perhaps pressure on the slotted screw would release it
but just don't know.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Barry" <n4buq@...>
To: [email protected]
Sent: Saturday, August 3, 2019 9:30:54 PM
Subject: Re: [TekScopes] 2445 LVPS Issues

And there, on page 6-25, is the complete process spelled out very neatly.
Just didn't expect that.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "n4buq" <n4buq@...>
To: [email protected]
Sent: Saturday, August 3, 2019 9:03:44 PM
Subject: Re: [TekScopes] 2445 LVPS Issues

I didn't realize the SM would go into detail on board removal. I will
read
up on it there.

Thanks for the tip on the incorrect silkscreen too.

Thanks,
Barry - N4BUQ

----- Original Message -----
From: "Tom Gardner" <tggzzz@...>
To: [email protected]
Sent: Saturday, August 3, 2019 7:10:03 PM
Subject: Re: [TekScopes] 2445 LVPS Issues

The service manual is quite specific on how to remove the various
boards.
It
isn't difficult, if follow instructions.

The manual is available at the usual places, e.g. tekwiki.

Be aware that on some of the 24x5* series the manual and silk screen
show
two
caps swapped. So when recapping, remove and replace a single
capacitor
before
moving on to the next; don't remove them all and then start replacing
them.


On 04/08/19 00:13, n4buq wrote:
I was using my 2445 today when I heard a strange sort of thump
noise
coming
from inside the scope after which I started smelling a burning
odor. I
had a few pieces of gear powered up at the time but quickly could
tell
the
smell was coming from the 2445.

I took off the case and top cover and pretty sure the smell is
coming
from
the LVPS board(s) but am a bit stumped at how to get those two
boards
out.
I'm pretty sure the top ribbon cable needs to come off but don't
quite
see how to get the large plastic cover off of the area where the
main
filter caps are.

Looking at some of the smaller caps, they appear to be leaning due
to
(I'm
guessing) bulging at the circuit board end but not sure exactly
what
overheated (or, possibly, made that thumping noise).

Are there instructions somewhere that outline how to remove those
boards?
If not, could someone provide a couple of hints to get me started?

Thanks,
Barry - N4BUQ







Join [email protected] to automatically receive all group messages.