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TomWhitwell / TuringMachine

Turing Machine Mk 2 Main Module
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Turing Machine faulty at power up #127

Open jfloftin opened 4 years ago

jfloftin commented 4 years ago

Hello,

I had a power surge. When I power up the unit there is only one led that works at the top left. Also when clocked nothing happens. My power rails are fine +12 & -12...

What do I need to do?

Jams

Thonk-Steve commented 4 years ago

Hi James,

You should probably start by using the multimeter that you use to check your rail voltages to check for any short circuits on the module.

Can you send photos of the main module? The front and back with all ribbon cables detached.

Thanks

Steve

On Mon, Feb 17, 2020, 00:03 jfloftin notifications@github.com wrote:

Hello,

I had a power surge. When I power up the unit there is only one led that works at the top left. Also when clocked nothing happens. My power rails are fine +12 & -12...

What do I need to do?

Jams

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jfloftin commented 4 years ago

I found the problem and it works perfectly now. The -12V rail is too low.

Thanks for your help,

James

On Mon, Feb 17, 2020 at 2:14 AM Thonk-Steve notifications@github.com wrote:

Hi James,

You should probably start by using the multimeter that you use to check your rail voltages to check for any short circuits on the module.

Can you send photos of the main module? The front and back with all ribbon cables detached.

Thanks

Steve

On Mon, Feb 17, 2020, 00:03 jfloftin notifications@github.com wrote:

Hello,

I had a power surge. When I power up the unit there is only one led that works at the top left. Also when clocked nothing happens. My power rails are fine +12 & -12...

What do I need to do?

Jams

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub < https://github.com/TomWhitwell/TuringMachine/issues/127?email_source=notifications&email_token=AAKXH6AUU6SHTTCX5KN7JDLRDHH5DA5CNFSM4KWH5VGKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4IN4MODA , or unsubscribe < https://github.com/notifications/unsubscribe-auth/AAKXH6CT3LCCUUPBLTMYXGTRDHH5DANCNFSM4KWH5VGA

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