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PICList Thread
'PicStart has gone crazy.'
1999\03\01@010537 by Troy P.

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Hi all,
I have a PicStart Plus programmer and all of the sudden when I hit
"program" to program a PIC16F84 part the "Active" light blinks on and
then both the "Power" light and the "Active" light goes out and
sometimes comes back on, sometimes not. The software will then say
"check power and connection". It does not seem to do this with a new
part. Does anyone know what is going on.
Thanks in advance.
PS I bought this thing new about 2 years ago and have programmed many
parts with no problem.

1999\03\01@014040 by g.daniel.invent.design

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This is guarranteed to occur if you insert the PIC wrong way around.

Are you using an external I.S.P. cable ?   If so, then is the external
circuit isolated or commonly grounded with the P.C. ?

Troy P. wrote:
{Quote hidden}

1999\03\01@093050 by Mike Keitz

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On Mon, 1 Mar 1999 00:00:35 -0600 "Troy P." <spam_OUTtpowTakeThisOuTspamFLASH.NET> writes:
>Hi all,
>I have a PicStart Plus programmer and all of the sudden when I hit
>"program" to program a PIC16F84 part the "Active" light blinks on and
>then both the "Power" light and the "Active" light goes out and
>sometimes comes back on, sometimes not. The software will then say
>"check power and connection". It does not seem to do this with a new
>part. Does anyone know what is going on.

It sounds like your PIC has a short in it.  If the programmer works with
another PIC16F84, throw the bad PIC16F84 away.


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1999\03\02@184344 by Mark A Moss

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I scratched my head over this once too.  I finally noticed that I had
MPLAB set to program a different chip than the 16CC84 I had in it.
Apparently the differences between the 16C84 and the chip I had
accidently set MPLAB to caused a high current draw somewhere in the
programmer.  To protect itself, PICSTART shuts down.  My guess is a
thermal shutdown feature in the internal power supply, but I haven't
taken the time to check.  BTW, nether the PICSTART nor the 16C84 were
damaged.

Mark Moss
Amateur Radio Operator, Technician, and General Tinkerer
Kalamazoo,  MI   U.S.A.


On Mon, 1 Mar 1999 09:18:47 -0500 Mike Keitz <.....mkeitzKILLspamspam@spam@JUNO.COM> writes:
{Quote hidden}

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