At least it wasn't the other way around. Set for 120 in 240 land.
Regards
On 2/19/2022 3:58 PM, Mark Bielman
wrote:
It was the power config switches! (inside the unit)
Was set for 240V. Changed to 120V and AOK!!!
That was easy. ?
Mark
On 2/19/22 14:15, Mark Bielman wrote:
> My HP 6033A arrived yesterday (from epay...
"guaranteed to work"... HA!)
> and looks AOK but when powered up,
> ALL LEDs light up (normal) and stay that way! (not
normal)
>
> Have not opened her up yet but looks like a uP
related issue.
>
> Anyone ever work on these? I hope it's not a ROM/GAL
issue!
>
> Might be a clue here as I do not "hear" any relay
clicks...
?? I've not worked on one, but the schematics are
available.? Being a
heavy unit that has just been shipped, the first thing
that I'd check is
for something having dislodged inside; a cable, PCB, etc.
?? The next thing I'd check is main power.? Check the line
voltage
configuration switches, and see if you get anything past
the bridge
rectifiers.? Looking at the schematic, I see there are a
few power rails
generated; check them all.? The +5V rail can apparently be
isolated from
the rest of the unit using W2.
?? These are really nice power supplies; it's worth giving
it some
attention.
???????????? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
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