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Problem with the ICD-U40 (transistor burned)

 
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Rodrigo
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Problem with the ICD-U40 (transistor burned)
PostPosted: Wed Mar 15, 2006 11:51 am     Reply with quote

Good afternoon,...I have a ICD-U40 that burned the transistor near the RJ (Target) conector , i would like to know what is the code of the transistor...
PCM programmer



Joined: 06 Sep 2003
Posts: 20139

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PostPosted: Wed Mar 15, 2006 2:17 pm     Reply with quote

This is a user forum. All questions about burned up ICD or MachX
should be emailed to CCS support. Or, call them on the telephone
to make sure they give you an answer.
Guest








PostPosted: Tue Mar 21, 2006 5:50 am     Reply with quote

I have been waiting for 10 days ....and I don't have the answer
catilo



Joined: 20 Apr 2006
Posts: 3
Location: Cordoba - Argentina

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I have a ICD-U40 that burned the transistor near the RJ
PostPosted: Thu Apr 27, 2006 1:58 pm     Reply with quote

Hello Rodrigo,
If you don't know the replacement for this transistor tray to replace this one with a low power switching transistor like 2n2222. You should take care of the schematic for the correct position of this part. Also you can find such information from internet.


Hope it helps.
Alejandro.
kender



Joined: 09 Aug 2004
Posts: 768
Location: Silicon Valley

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PostPosted: Thu Apr 27, 2006 2:58 pm     Reply with quote

How do you know that it was a transistor?

I had a similar problem a couple of years ago - I have blown up a Zener diode inside ICD-U. CCS tech support did actually give me the replacement part number and the replacement worked. Here's ny correspondence with them:

Quote:

This message is a reply to CCS e-mail id: 3GB318

I don't have a good feeling about your unit. The reverse power would have appeared
at most of the chips on the board including the PIC.

===========================================================================
CCS PIC C Compiler home: www.ccsinfo.com/picc
Software download page: www.ccsinfo.com/download.shtml
Latest Compiler news: www.ccsinfo.com/news.html

If you would like to be notified when the next compiler
version comes out go to www.ccsinfo.com/cgi-bin/email.cgi
===========================================================================




> We have used the older board powered ICD-U. We had reversed the 5V and GND
> pins.
>
> Thanks for the replacement part number!
>
> Nick
>
>
> -----Original Message-----
> From: CCS Support [mailto:support_nospam_ccsinfo.com]
> Sent: Monday, July 28, 2003 9:47 AM
> Subject: Re: How to replace a toasted diode (?) in the ICD-U?
>
>
> This message is a reply to CCS e-mail id: 3GA988
>
> The part is MMBZ5232BW-7
>
> What ICD do you have ICD-U or ICD-U40 and on what pin did you put the 9V?
>
> ===========================================================================
> CCS PIC C Compiler home: www.ccsinfo.com/picc
> Software download page: www.ccsinfo.com/download.shtml
> Latest Compiler news: www.ccsinfo.com/news.html
>
> If you would like to be notified when the next compiler
> version comes out go to www.ccsinfo.com/cgi-bin/email.cgi
> ===========================================================================
>
>
>
> > Carelessly we had applied 9V to our circuit, where 5V should be. ICD-U was
> > the part that drew all the current and marked our carelessness with a sultan
> > of smoke. Fortunately the rest of the circuit took no considerable damage.
> > When we opened the enclosure of the ICD-U the SOT-23-3 part in the
> > bottom-left corner of the PCB was found burned.
> >
> > What is the replacement part?
> > Is it likely that other parts of the ICD-U are damaged?
> > Would you kindly send me a schematic for the ICD-U?
> >
> > Thanks!
> >
> > Sincerely,
> > Nick


Last edited by kender on Thu Apr 27, 2006 3:44 pm; edited 1 time in total
PCM programmer



Joined: 06 Sep 2003
Posts: 20139

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PostPosted: Thu Apr 27, 2006 3:25 pm     Reply with quote

If that's your current email address, you should edit your post and
delete it before spambots scan this page and pick it up.
kender



Joined: 09 Aug 2004
Posts: 768
Location: Silicon Valley

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PostPosted: Thu Apr 27, 2006 3:46 pm     Reply with quote

PCM programmer wrote:
If that's your current email address, you should edit your post and
delete it before spambots scan this page and pick it up.


Thanks, PCM! I have removed my address. But unfortunately, I'm receiving dozens of spam e-mails already.
ivanperino



Joined: 08 Jun 2006
Posts: 14

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Level Translator & Transistor
PostPosted: Tue Dec 04, 2007 1:59 pm     Reply with quote

There is a Level Translator inside ICD-U40 also a 2n2222 transistor. This can be burned when you connect GND to +VCC and Vcc to gnd from de ICD to Circuit. This Level Translator adapts voltages from inside ICD to voltage used in the circuit you are programming.
It is about MAX3372 from MAXIM-IC, this is an 8 pins IC and the top mark use to be AAKS
I hope this have been useful.
Dimmu



Joined: 01 Jul 2007
Posts: 37

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PostPosted: Mon Dec 17, 2007 11:42 am     Reply with quote

For the transistor, you can look at the post :

http://www.ccsinfo.com/forum/viewtopic.php?t=31814

Note that not any bipolar will do as replacement part. The BS170(I know it is not a bipolar) worked for me until I found the original part.

Dimmu
AHE



Joined: 22 Jul 2009
Posts: 10
Location: Renswoude, The Netherlands

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Fried ICD-U40
PostPosted: Wed Mar 10, 2010 1:31 am     Reply with quote

I also burned the (next to the RJ11 jack pins) 1S transistor by accidentally connecting the PCD-pin to +5V capable of supplying 1 Amp of power.
A 2N7002 (FET) proved to be a good replacement for the time being.

Arend
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