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Re: Lardo buys another zeddy
Posted: Tue Feb 07, 2023 9:40 pm
by rmbrowngr
Lardo Boffin wrote: ↑Tue Feb 07, 2023 5:03 pm
Might be a while before I do anything with this one though as I seem to have run Ginger Electronics out of keyboards…
I’m waiting for them come back into stock as well.
Re: Lardo buys another zeddy
Posted: Tue Feb 07, 2023 10:16 pm
by 1024MAK
rmbrowngr wrote: ↑Tue Feb 07, 2023 9:40 pm
Lardo Boffin wrote: ↑Tue Feb 07, 2023 5:03 pm
Might be a while before I do anything with this one though as I seem to have run Ginger Electronics out of keyboards…
I’m waiting for them come back into stock as well.
Well, don’t let Lardo get in first… Or you may wait for even longer
Mark
Re: Lardo buys another zeddy
Posted: Tue Feb 07, 2023 11:07 pm
by Lardo Boffin
True, there will only be 50 of them…
Re: Lardo buys another zeddy
Posted: Wed Feb 08, 2023 4:11 pm
by rmbrowngr
ZX8-KDLX - 50 pieces from 15.02.2023 !!!
Have to be quick next week
Re: Lardo buys another zeddy
Posted: Wed Feb 15, 2023 1:30 pm
by rmbrowngr
ZX8-KDLX ordered!! There were a few left
Re: Lardo buys another zeddy
Posted: Tue Feb 28, 2023 9:35 am
by Lardo Boffin
A superb working issue one and RAM pack. The RAM PACK was working when it arrived but died after half an hour of soak testing. Hey ho.
Check out the logo. Almost perfect.
Clearly been repaired at some point:
Re: Lardo buys another zeddy
Posted: Tue Feb 28, 2023 11:23 am
by Paul
Lardo the RAM Killer
Re: Lardo buys another zeddy
Posted: Tue Feb 28, 2023 10:48 pm
by Lardo Boffin
I didn’t mean to honest! I was just soak testing it before re-homing it.
Re: Lardo buys another zeddy
Posted: Wed Mar 01, 2023 6:50 am
by Paul
Before trying out I do the following tests:
First I measure the voltage of the original PSU.
If it out of range in the DC-Mode => don't use it.
If it shows something in AC mode => don't use it.
The zeddy normally needs no recap so just test it.
If it works but doesn't startup reliable (needs more than one try occasionally) => recap it.
Then to the 16K RAMPacks
They create the voltages required by heavy use of electrolyte Capacitors. One voltage wrong kills the dynamic RAMs.
So never try it without recap first! It's lethal!
Re: Lardo buys another zeddy
Posted: Wed Mar 01, 2023 8:35 am
by Lardo Boffin
Thanks!
I was trying it on my zeddy with a good PSU, so I guess it was the caps inside the RAM pack.
Lesson learnt!
If I recap it and socket the RAM I can presumably work out which one(s) are dead and fix it?