Everyone, I recently had my Driver board go up in smoke and after research in the Yahoo group for Icom 7000 owners came accross many posts, there are also pictures of this known problem!!!
I talked to Icom today and got the party line of " we are unaware if this problem" response!!
I will be sending my rig in for repair and we will see if they stand behind their product.
I'm not holding my breath after talking with their service center phone rep!!
Here's the article in Yahoo:http://groups.yahoo.com/group/ic7000/message/7382
Here's the pictures of the driver board:http://ph.groups.yahoo.com/group/ic7000/photos/browse/8fec
And part of the text:
Re: Driver Board is smoked
my DRIVER UNIT also died in smoke. It seems not to be a thermal
problem which damaged the driver stage – as I thought first. An Icom
technician told me, that unintentional oscillations may have caused
the failure. The problem is known by Icom and they have a
modification for this. Im my case the MOSFET PD15055 was replaced
and 11 (!) additional "Massefedern" (ground springs? ground pins?)
have been installed on the PCBs. My Radio is SN 0202054.
DG2JA - Juergen Aust
--- In firstname.lastname@example.org
, "n7xq" <moonman@...> wrote:
> I beleive that the DRIVER UNIT ( Mosfet PD55015 ) went up in smoke
> me, I had just made several ssb contacts and decided to give CW a
> that lasted about 5 min. then a small ball of smoke rolled out of
> top of the rig and All RF output, on All Bands and All modes
> no output at all, The recieve is excellent on All Bands and All
> I will call Icom tomorrow and try to find out if this is a common
> problem and if there is a fix for the Issue that Icom will provide.
> The Serial # of my Rig is 0503212. Has anyone else had this
> that wouldn't mind shareing there experience?
> Craig N7XQ
Re: [IC-7000] Re: Driver Board is smoked
As I wrote around 1 week ago, I had a defective Driver board on my 7K. As
I received the new boart from my ICOM dealer, I did the replaceing myself
and then discowered that there was no heat compound between the copper
strip on the driver board and the heatsink. Even worse is that the copper
strip is not flat so only the ends are in touch with the sink. The power
dissipation in the driver is 14W independent of the output level (class
A). I think the problem must be the missing heat transfer from the
transistor via the copper strip to the heatsink.
I would advice to make the copper strip flat before installing it by
fileing it with a fine file to be sure the heat transfer is as good as
possible and also use heat compound.
73, es LA2NI Kjell
On Fri, 14 Sep 2007 05:35:39 +0200, John Chandler
> Hi Chuck - I was quite concerned to see your post on the driver board
> etc. Well my friend you "ain't alone" as mine has done exactly the same
> thing twice. The last trip back to Icom Australia from the selling
> dealer resulted in them contacting Japan for assistance. I heard 2nd
> hand that an earth loop mod corrected the problem and I have had the 7k
> back in use now for about a week with no drama so far. The first time
> it went up in flames and filled the shack with nasty smoke. In fact the
> dealer smelt the 7K in it'[s box as I took it through his door. The 2nd
> demise (after 3days back) saw no smoke and flames but a distinct
> phtttttt was heard. The driver FET is used for HF, VHF and UHF. Apart
> from those probs which were fixed under W/Ty I guess I was content with
> the rig!!!!!! BTW., the rig still smells slightly so I hope that may
> disappear. Hats off to the local dealer UHF Comms. here in Townsville
> for their W/Ty service on boh occasions. This 7K was one of three
> d in November 2006. Perhaps you could pass on this info to your
> repairer just in case.
> Good luck mate...
> Dave ... VK4DCC Townsville North Queensland.
> ----- Original Message -----
> From: Chuck
> To: email@example.com
> Sent: Friday, September 14, 2007 8:40 AM
> Subject: [IC-7000] Re: Driver Board is smoked
> Mine went up in smoke today while on 6 Meters!!!!!!
> Not too pleased right now!!!!!!
> I'll be sending my IC-7000 back after only about 18 months of service.
> It was an early production radio so I guess the driver board issue had
> not been addressed at that point.
> What sucks is I wanted to try to work 3B7C on some other bands this
> week and now I'm toast. By the time I get it back, they will be
> finished with the DXpedition
> Maybe time to buy that TS-2000 or PRO III I have been wanting(?)
> ****If ICOM won't help with the repair issue, I won't be buying any
> more of their products again!!!!!!!!!!
> We SHALL see............
> Chuck Pyatt KB3MMX
RE: [IC-7000] Re: Driver Board is smoked
I've had two IC-7000s with the driver board problem. Both of them were in
mobile environment being "hammered" pretty hard in QSO party operation but
with good antenna and good grounding. Mine were in shop about 4-6 weeks.
Fortunately they both were under warranty - smoke appeared about 7 months
[mailto:firstname.lastname@example.org] On Behalf Of
Sent: Tuesday, July 31, 2007 3:28 PM
Subject: [IC-7000] Re: Driver Board is smoked
My 7k "went up in smoke" during FD this year, and I just got it back.
First of all: I was running "1D", home power, using an antenna that I
know works well. About 8 hours into FD, and not really hammering the
radio too hard, I changed bands, hit the key to check SWR, and boom!
Smoke. Then, as described below, no output on any band.
I sent the rig into ICOM and just got it back today after almost one
month in the shop. They replaced the RF Driver Board and a leaky UHF
This set me back almost $250!
ICOM didn't admit to any "known faults", and the radio was 13 months
old when it broke. I'm not too happy.
Has anyone else been through this, and has the driver board "problem"
been fixed in the most recent rev?
73 DE Tom