On 2020-12-03 3:27 a.m., Joel Setton wrote:
Hello Toby,
I had exactly the same problem on the CRT of my 181A oscilloscope. I
repaired it by putting the delaminated flex cable together with some
2-part epoxy. While the epoxy is curing, it is vitally important to
pinch the cable as thin and as flat as possible, so that it remains
flexible. I held it with two pieces of cardboard, secured in a vice.
Hi Joel,
Yes it does, thanks for the reply. I'd be interested to know what your
ribbon cable looks like. Was it removable at the CRT end, or integrally
connected?
I can see some very difficult aspects to this repair. If it's
delaminating along the whole length then the whole length would need to
be reglued, but a perfect seal would only be needed in the gap between
the 7.5kV conductor and the others?
I am also thinking that slicing the 7.5kV part away from the other two
and heatshrinking it along its length would also work. I might even be
able to avoid removing the entire CRT this way (it took me a few _hours_
to remove a broken CRT from a 1335A plus I'd be very worried about
damaging this one. These CRTs now seem to be unobtainable, period).
Never attempted anything like this myself so it is great to hear from
someone who has resolved it before!
--Toby
I hope this helps !
Joel
