[ICOM] Problem with IC-2720

[Paul S. Serio]

I had a similar experience though mine never blew a fuse. It just got real

weak on transmit. Mine was a few years old at the time. Icom fixed it at
no charge. The problem was with the transmit driver transistor. They told
me that the cure was letting the solder free flow from the legs of the
transistor to the heat sink tabs that protrude through the top of the
circuit board. Apparently if this is not done thoroughly the transistor
will overheat and it's life will be shortened. I fixed one myself at a
later date. After replacing the driver transistor I fashioned a homemade
heatsink from the side of the chassis to the top of the driver transistor
to assist in drawing heat off of it. That was several months ago and it is

still working fine. If yours blew an output device it may not be covered
under this unofficial extended warranty. Blowing a 20 fuse sounds like
something heavier than a driver. I'd give them a call first and describe
your failure. Merry Christmas to all from N5PS.



> Last year I was in the middle of a transmission when unknown to me the
> transmitter went dead - same as your experience. After some discussing,
> I took a suggestion and contacted Icom in Bellevue. They agreed to look
> at it and in the end fixed it at no charge. Apparently there was an
> early problem with soldering in the PA and they told me if I came up
> with a problem that was covered by the warranty, they would fix it at no

> charge even tho the warranty on mine was up. Give them a call and see if

> that program still exists. I have a second 2720 for a base station that
> is two years younger and have had no issues with that one.
>
> 73 es Merry Christmas, Carl WCØV
>
> Julio Peralta wrote:
>
>>A couple of days ago while running mobile and in mid transmission my
>>IC-2720 went dead no lights no nothing. When I got home I checked the
>>radio and found a 20 amp fuse had blown. I replaced the fuse and the
>>radio came back to life or so I thought. The next time I was out mobile
>>I was getting reports of not being good copy into the repeater. When I
>>got back to the house I again made some checks and determined the was
>>little or no RF output even though the front panel bar graph indicated
>>full power out. Looks like the output power device is blown.
>>
>>A friend mentioned that this is a well known problem with the 2720 and
>>that Icom has been replacing the device at no charge. Does anyone have
>>any knowledge of this?
>>
>>Julio, W4HY



+++++++++++++
This e-mail was checked by the TecInfo Content Scanning Service for potentially harmful content, such as viruses or Spam For more information, call 800.863.5415 or visit www.tecinfo.net
+++++++++++++