RetroBrew Computers Forum: General Discussion » SBC-188 V3.2 board problem [SOLVED]

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SBC-188 V3.2 board problem [SOLVED] [message #9954]

Wed, 08 June 2022 22:22

microbit
Messages: 18
Registered: June 2022
Location: Melbourne

Junior Member

solved

[Updated on: Wed, 15 June 2022 09:34]

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solved [message #9955 is a reply to message #9954]

Thu, 09 June 2022 00:12

microbit
Messages: 18
Registered: June 2022
Location: Melbourne

Junior Member

obsolete

[Updated on: Wed, 15 June 2022 09:35]

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Re: SBC-188 V3.2 board problem [message #9956 is a reply to message #9955]

Thu, 09 June 2022 03:52

microbit
Messages: 18
Registered: June 2022
Location: Melbourne

Junior Member

ok..

[Updated on: Wed, 15 June 2022 09:37]

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Re: SBC-188 V3.2 board problem [message #9957 is a reply to message #9956]

Thu, 09 June 2022 03:56

microbit
Messages: 18
Registered: June 2022
Location: Melbourne

Junior Member

Ok..

[Updated on: Wed, 15 June 2022 09:37]

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Re: SBC-188 V3.2 board problem [message #9960 is a reply to message #9957]

Sat, 11 June 2022 03:41

microbit
Messages: 18
Registered: June 2022
Location: Melbourne

Junior Member

Ok, built another board and that instantly worked, so voilà
clearly a fault on the first board. I'll probably never find that fault, I'm over it Smile

Everything works great incl PPIDE but I can't get a floppy drive to work.
Some checking, guess I'll post about that in a separate thread.

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Re: SBC-188 V3.2 board problem [message #9961 is a reply to message #9960]

Sat, 11 June 2022 13:51

lynchaj
Messages: 1080
Registered: June 2016

Senior Member

Hi
if you've got a working board, I would try a one at a time chip swap between it and the non-working board. You may be able to narrow down a bad actor if you can get the problem to follow a part. It does have some SMD components so you can't do them all but you might get lucky and find the culprit

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Re: SBC-188 V3.2 board problem [message #9962 is a reply to message #9961]

Sat, 11 June 2022 20:21

microbit
Messages: 18
Registered: June 2022
Location: Melbourne

Junior Member

Thanks for the reply!
It was definitely the board. I checked most nets, busses etc and couldn't find.
Not to worry, I bought 3 boards, will build a 2nd working one Smile

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