Sounds to me at first glance that the beam is deflected off
screen.?
Daun
On 8/3/2024 15:59, Eric Boyle via
groups.io wrote:
I¡¯ve been working on this 585 for a while now and I¡¯m finally
making progress.?
A little backstory; I bought this from a fine gentleman with
the understanding that it wasn¡¯t working and may never work.
When it arrived the CRT was shattered in shipping, which sucked
because it was a P2. Anyways, ordered a ¡°new¡± CRT off of eBay
and no trace, no nothing. Tinkered with it a little bit, rebuilt
the HV supply and nothing. Put it under the bench for a few
weeks.?
Today I decided to get it out and play with it some more.
Turned it on, and lo and behold, the CRT showed life! Checked
voltages and had the 325 and 500 way off, swapped some tubes
around and got that sorted. Now everything¡¯s back to normal but
still no trace, just a ¡°bloom¡± on the CRT. I¡¯m at my wit¡¯s end
now because I can¡¯t seem to get a trace. To me, it¡¯s almost like
the trace is off the screen and I¡¯m getting reflections. The
¡°bloom¡± will pulse with the time base, so it¡¯s trying to work.?
The best way I can describe the ¡°bloom¡± is a mushroom cloud.?
Any ideas?
?
?
--
Daun E. Yeagley II, N8ASB
