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SteveO
 Post subject: 855 Drive Mod question
PostPosted: Mon Dec 12, 2022 12:40 am 
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So I am considering adding a diode selector circuit via a GGG rotary board to my 855 drive. My question is, do I just remove both diodes from the 855 PCB and just attach the two wires from the rotary board to where one of the diodes was located? (see attached photo)

Thanks, in advance!
Steve0


Attachments:
GGG+855+Schema.jpg
GGG+855+Schema.jpg [ 678.43 KiB | Viewed 11094 times ]

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duhvoodooman
PostPosted: Mon Dec 12, 2022 7:28 am 
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SteveO wrote:
My question is, do I just remove both diodes from the 855 PCB and just attach the two wires from the rotary board to where one of the diodes was located? (see attached photo)

Yep. But use the OUTER diode eyelets on the 855 board, not the inner ones as you have shown. See marked up image below:

Attachment:
855_clipping_eyelets.jpg
855_clipping_eyelets.jpg [ 69.96 KiB | Viewed 11083 times ]

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SteveO
PostPosted: Mon Dec 12, 2022 11:24 am 
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Location: Clovis, CA
duhvoodooman wrote:
SteveO wrote:
My question is, do I just remove both diodes from the 855 PCB and just attach the two wires from the rotary board to where one of the diodes was located? (see attached photo)

Yep. But use the OUTER diode eyelets on the 855 board, not the inner ones as you have shown. See marked up image below:

Attachment:
855_clipping_eyelets.jpg


Perfect! Thank you sir!
Not that it matters, but just out of curiosity, what would be the purpose of the 4 'inner' attachment points?

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byoc
PostPosted: Mon Dec 12, 2022 12:11 pm 
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SteveO wrote:
duhvoodooman wrote:
SteveO wrote:
My question is, do I just remove both diodes from the 855 PCB and just attach the two wires from the rotary board to where one of the diodes was located? (see attached photo)

Yep. But use the OUTER diode eyelets on the 855 board, not the inner ones as you have shown. See marked up image below:

Attachment:
855_clipping_eyelets.jpg


Perfect! Thank you sir!
Not that it matters, but just out of curiosity, what would be the purpose of the 4 'inner' attachment points?


They are there so you can add two diodes in series.

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SteveO
PostPosted: Mon Dec 12, 2022 12:49 pm 
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SteveO wrote:
Perfect! Thank you sir!
Not that it matters, but just out of curiosity, what would be the purpose of the 4 'inner' attachment points?


byoc wrote:
They are there so you can add two diodes in series.

Ahhh... makes sense. Thank you!

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