Hello All,
I recently had a power supply problem and it has let the smoke out of my PacComm TNC-320 packet modem. While I have the manual, I do not have a circuit diagram and only have a partial id on one of the cooked ICs U17.
The partial number is MC xxxxx06P (I think) and is on the main board across the RS-232 D9 connector circuit.
Could you check your circuit diagram, parts list or slide off the cover and have a look and let me know what the U17 IC is please?
Many Thanks Rob VK1KW
Rob,
You might find difficulty sourcing that smoke. That particular smoke has been EOL for quite some time.
On Jan 30, 2017 22:54, "vk1kw" vk1kw@netspace.net.au wrote:
(Please trim inclusions from previous messages) _______________________________________________ Hello All,
I recently had a power supply problem and it has let the smoke out of my PacComm TNC-320 packet modem. While I have the manual, I do not have a circuit diagram and only have a partial id on one of the cooked ICs U17.
The partial number is MC xxxxx06P (I think) and is on the main board across the RS-232 D9 connector circuit.
Could you check your circuit diagram, parts list or slide off the cover and have a look and let me know what the U17 IC is please?
Many Thanks Rob VK1KW
44Net mailing list 44Net@hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net
You'd be surprised. I have one of the oldest TNCs in the world (pre-TAPR :-) and I can still find parts for it - and for many old radios in that era - eBay is a very useful tool - good luck!
BTW - what you may be looking for is an MC145406.
- Richard, VE7CVS
On 1/30/17 8:03 PM, Mark Phillips wrote:
(Please trim inclusions from previous messages) _______________________________________________ Rob,
You might find difficulty sourcing that smoke. That particular smoke has been EOL for quite some time.
On Jan 30, 2017 22:54, "vk1kw" vk1kw@netspace.net.au wrote:
(Please trim inclusions from previous messages) _______________________________________________ Hello All,
I recently had a power supply problem and it has let the smoke out of my PacComm TNC-320 packet modem. While I have the manual, I do not have a circuit diagram and only have a partial id on one of the cooked ICs U17.
The partial number is MC xxxxx06P (I think) and is on the main board across the RS-232 D9 connector circuit.
Could you check your circuit diagram, parts list or slide off the cover and have a look and let me know what the U17 IC is please?
Many Thanks Rob VK1KW
44Net mailing list 44Net@hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net
Many thanks Richard. Looks like the one so have ordered from eBay. Regards Rob
-----Original Message----- From: 44Net [mailto:44net-bounces+vk1kw=netspace.net.au@hamradio.ucsd.edu] On Behalf Of Richard Chycoski Sent: Tuesday, January 31, 2017 4:30 PM To: 44net@hamradio.ucsd.edu Subject: Re: [44net] PACCOMM TNC-320 Smoke
(Please trim inclusions from previous messages) _______________________________________________ You'd be surprised. I have one of the oldest TNCs in the world (pre-TAPR :-) and I can still find parts for it - and for many old radios in that era - eBay is a very useful tool - good luck!
BTW - what you may be looking for is an MC145406.
- Richard, VE7CVS
On 1/30/17 8:03 PM, Mark Phillips wrote:
(Please trim inclusions from previous messages) _______________________________________________ Rob,
You might find difficulty sourcing that smoke. That particular smoke has been EOL for quite some time.
On Jan 30, 2017 22:54, "vk1kw" vk1kw@netspace.net.au wrote:
(Please trim inclusions from previous messages) _______________________________________________ Hello All,
I recently had a power supply problem and it has let the smoke out of my PacComm TNC-320 packet modem. While I have the manual, I do not have a circuit diagram and only have a partial id on one of the cooked ICs U17.
The partial number is MC xxxxx06P (I think) and is on the main board across the RS-232 D9 connector circuit.
Could you check your circuit diagram, parts list or slide off the cover and have a look and let me know what the U17 IC is please?
Many Thanks Rob VK1KW
44Net mailing list 44Net@hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net
PACCom did not put protection for reverse polarity on their units. you can try and contact them, but they dont make anything for the ham market anymore. They are really nice people.
Lin
On Mon, Jan 30, 2017 at 11:03 PM, Mark Phillips g7ltt@g7ltt.com wrote:
(Please trim inclusions from previous messages) _______________________________________________ Rob,
You might find difficulty sourcing that smoke. That particular smoke has been EOL for quite some time.
On Jan 30, 2017 22:54, "vk1kw" vk1kw@netspace.net.au wrote:
(Please trim inclusions from previous messages) _______________________________________________ Hello All,
I recently had a power supply problem and it has let the smoke out of my PacComm TNC-320 packet modem. While I have the manual, I do not have a circuit diagram and only have a partial id on one of the cooked ICs U17.
The partial number is MC xxxxx06P (I think) and is on the main board across the RS-232 D9 connector circuit.
Could you check your circuit diagram, parts list or slide off the cover and have a look and let me know what the U17 IC is please?
Many Thanks Rob VK1KW
44Net mailing list 44Net@hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net
Found this. Might not be the exact part but smoke is smoke, right?
http://www3.telus.net/bc_triumph_registry/smoke.htm
On Mon, Jan 30, 2017 at 11:03 PM, Mark Phillips g7ltt@g7ltt.com wrote:
Rob,
You might find difficulty sourcing that smoke. That particular smoke has been EOL for quite some time.
On Jan 30, 2017 22:54, "vk1kw" vk1kw@netspace.net.au wrote:
(Please trim inclusions from previous messages) _______________________________________________ Hello All,
I recently had a power supply problem and it has let the smoke out of my PacComm TNC-320 packet modem. While I have the manual, I do not have a circuit diagram and only have a partial id on one of the cooked ICs U17.
The partial number is MC xxxxx06P (I think) and is on the main board across the RS-232 D9 connector circuit.
Could you check your circuit diagram, parts list or slide off the cover and have a look and let me know what the U17 IC is please?
Many Thanks Rob VK1KW
44Net mailing list 44Net@hamradio.ucsd.edu http://hamradio.ucsd.edu/mailman/listinfo/44net
-
Lin Holcomb -
Mark Phillips -
Richard Chycoski -
vk1kw