[Usbpicprog-technical] [usbpicprog-technical] Re: Contact: Burned d9 on smd programmer

[Frans S. <fra...@gm...>]

Dear Bojan Biskup,

The transistor Q3 can handle a much higher current than D9 and will thus
not easily blow out. If the rest of the programmer is still working
(e.g. the VPP should be ~12V)
You can test this by means of the IO Test dialog in the usbpicprog
application.
In fact I think only D9 will have been distroyed, and this can be easily
replaced.
You can use any diode as long as it fits the footprint. You can even
just short circuit D9, but in that case you can't connect an external
powersupply while connecting usbpicprog at the same time.

Kind regards,

Frans Schreuder

ps. I have also forwarded this e-mail to the mailing list because it
could be useful for others.

On 01/13/2011 01:47 PM, Bojan Biškup wrote:
> Name: Bojan Biškup
>
> Email: bi...@gm...
>
> Subject: Burned d9 on smd programmer
>
> Message: Hello Frans
> Today I managed to destroy D9 on the programmer, I guess the iscp was
> connected wrong. I wonderd if U know of a such case and if any thing
> else was burned.
>
> Regards, Bojan
>
>
>