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Re: ACORN A5000 inbound

Posted: 21 Nov 2023 08:53
by rubber_jonnie
HigashiJun wrote: 21 Nov 2023 07:37 @rubber_jonnie

Like for my A3000, I will for sure check whatever is necessary.

Capacitors in the PSU were all OK, and once the dust cleaned off, the fan got more silent.

Meanwell PSU is also a solution, but it would be only in case the original one fails.
Yeah, my PSU seems to be unusual with the leaky caps, all of the larger ones on the -5v/5v/12v side had leaked, but most people seem to report them as being just fine. No schematics either, which didn't help.

I still have my fan hooked up, it's not the quietest fan by any means, but mechanically it is sound,

Re: ACORN A5000 inbound

Posted: 21 Nov 2023 10:30
by HigashiJun
Woohoo, the postman just bring me that:

Keyboard.JPG

The mouse is on its way and the RTC should also reach me soon.

:D

Re: ACORN A5000 inbound

Posted: 21 Nov 2023 10:36
by rubber_jonnie
HigashiJun wrote: 21 Nov 2023 10:30 Woohoo, the postman just bring me that:


Keyboard.JPG


The mouse is on its way and the RTC should also reach me soon.

:D
Very nice indeed :)

Re: ACORN A5000 inbound

Posted: 21 Nov 2023 10:59
by HigashiJun
@rubber_jonnie

Yes, and pricey...

:cry:

Re: ACORN A5000 inbound

Posted: 21 Nov 2023 11:27
by rubber_jonnie
HigashiJun wrote: 21 Nov 2023 10:59 @rubber_jonnie

Yes, and pricey...

:cry:
I'll bet it was, and with a mouse as well your wallet will probably need a lie down!!!

Re: ACORN A5000 inbound

Posted: 21 Nov 2023 11:44
by HigashiJun
rubber_jonnie wrote: 21 Nov 2023 11:27 I'll bet it was, and with a mouse as well your wallet will probably need a lie down!!!
I got the mouse for a "bargain" price I would say...

Maybe one more big expense again this month and a then a little rest for my wallet.

:lol:

Re: ACORN A5000 inbound

Posted: 21 Nov 2023 11:46
by rubber_jonnie
HigashiJun wrote: 21 Nov 2023 11:44
rubber_jonnie wrote: 21 Nov 2023 11:27 I'll bet it was, and with a mouse as well your wallet will probably need a lie down!!!
I got the mouse for a "bargain" price I would say...

Maybe one more big expense again this month and a then a little rest for my wallet.

:lol:
I know what you mean!!

Good you got the mouse cheap :)

Re: ACORN A5000 inbound

Posted: 22 Nov 2023 10:56
by HigashiJun
Just repaired the two missing pads on the motherboard today:

A.JPG
Pads were first cleaned off from solder on the RTC.

B.JPG

And then on the two 74HCT245T.

C.JPG

New pad fitted and soldered to its trace.

D.JPG

Looks good... And connectivity is OK.

E.JPG

This one is still curing until tomorrow. It's not connected to any trace, so it was just epoxied to the motherboard.


That's all for the moment.

:D

Re: ACORN A5000 inbound

Posted: 22 Nov 2023 11:05
by alexh
Nice work. I found that there were traces that go under the FPU socket to the ARM chip that were affected by the battery alkali. Yours looks much better than mine. The slightest touch with a cotton bud and C159 lifted and took it's pads with it.

Re: ACORN A5000 inbound

Posted: 22 Nov 2023 11:13
by HigashiJun
Thanks.

I think I will have to remove the FDD and IDE connectors...

Some traces near them look suspicious.

Not tested yet though.

I just hope it will be less hassle than with my A3000.