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Author Topic: cnc screwcutting???  (Read 18531 times)

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Re: cnc screwcutting???
« Reply #50 on: January 26, 2011, 03:14:11 PM »
re checked input pin with 1k resistor with reference to grd
volts output from BOB 5.12v (
volts @ input pin with I k resistor 2.16v

Hi Dale
If a 1k pull-up resistor only gets the input to 2.16 volts, then I think the chip is almost certainly damaged - sort of lightly toasted. Next step is to replace it. Worth having some spare parts anyhow.

Cheers
Roger
Re: cnc screwcutting???
« Reply #51 on: January 26, 2011, 03:58:24 PM »
Hi Roger,

Thanks for your help, much appreciated. I'll get the repair kit from cnc4pc, it will probably take a couple of weeks to arrive here in the UK. I post my results when the new IC's arrive.

Kind regards

Dale Gribble
Re: cnc screwcutting???
« Reply #52 on: January 26, 2011, 04:16:10 PM »
I'll get the repair kit from cnc4pc, it will probably take a couple of weeks to arrive here in the UK. I post my results when the new IC's arrive.

Hi Dale - if you can photo the top of the chips I might be able to figure out what they are, and maybe you could buy a couple locally - RS Components or similar in the UK.

Cheers
Roger
Re: cnc screwcutting???
« Reply #53 on: February 02, 2011, 04:25:47 AM »
Hi roger,

Thanks for your offer on identifying the chips, I ordered the repair kit from CNC4PC at a very reasonable price of $9.

Regards

Dale