It’s not unreasonable to expect that the power supply is in need of a
recap, and a marginal power supply could cause random problems.
In your shoes I’d pull the case and measure the power supplies for voltage
and ripple. There’s typically a table with allowable values in the service
manual.
?ann f?s., 28. mar. 2025 kl. 23:27 skrifa?i Jay Czaja via groups.io
<jmczaja@...>:
toggle quoted message
Show quoted text
On Fri, Mar 28, 2025 at 09:12 PM, VE6WMR wrote:
Jay,
I have two 2465's here, and they're known for quite a few gremlins,
including
NVRAM battery issues, among other problems.
In my case, I have two good ones, and I can have an excellent one by
parting
them together and renovating. I'll cast off the remaining wreck.
You can do the same with yours. It's quite an old scope, repairable,
with good
manuals, but far outside any warranty support. Why did you buy it then?
It
isn't reasonable to expect these to be without major flaws needing to be
addressed. If you're ready to do that work, dive in.
If you're not willing to do all that work, you should return it and buy
a new
overseas model with warranty. Rigol, Instek, Owon, etc.
It's something like owning an older car. Much more repairable, but
needing
much more time into it.
Thanks for the reply and perspective. I fully understand these are old
scopes and have no problem putting in a little work to get a scope working
as it should. I just get a little spooked when I can't reproduce a problem.
Earlier, I turned the scope off for about an hour and started it up again
and as of now the scope has been running for about 7 hours without any
issues. All of the functions I've tested have been working as expected. All
channels work, the display is sharp, measurements seem accurate, triggers
are working well, etc. So far the only issues I encountered were the first
few startups after unpacking.
I have a little bit of time to decide what to do and whether to send it
back or keep it. I'll play around with it for the next week or so and see
if the gremlins misbehave.
