Date   

Re: in the adjustment menu i can not get the driver idle current down to the 1 amp setting

Steve W3AHL
 

Dave,

Set the Driver Idle Current adjustment reading to "00", then note the current draw.  Rotate the  dial to INCREASE the current draw by 1.0 amp above the previous reading.  That establishes the proper Driver Idle Current, assuming the adjustment circuits are working correctly.

This only sets the Class A Driver idle current -- it has nothing to do with the output FET's operating points, which are fixed.

The UHF PA FET is often weakened by excessive (>35 VDC) voltage spikes on the 12 VDC power input when operating mobile, due to counter EMF spikes from the engine's starter motor.  In my experience though this usually results in the UHF power output dropping to 5-10 watts or zero.

I would do the complete Transmitter adjustment procedures before attempting any troubleshooting of varying transmitter power output by band.   It may bring all the bands close to specification.  If not, it may lend more insight to where the problem is.  If multiple bands are below the specified output level after correct adjustments, then the Driver (Q504) may be at fault.

It is important to verify that the "12 VDC" input supply is 13.8 volts at full TX PO output and capable of supplying 25+ amps before doing TX adjustments.  More importantly, verify that the supply voltage seen by the circuits inside the unit are > 13.3 VDC under full load by measuring across the TUNER port pins 3-4.  A common problem is excessive voltage drop across the factory supplied fuse holders on the input power cable.  These fuse holders are a poor design and should be replaced with 30 amp automotive style fuse holders.

Steve, W3AHL


in the adjustment menu i can not get the driver idle current down to the 1 amp setting

davebb123456
 

Hi,
in the adjustment menu i can not get the driver idle current down to the 1 amp setting  the lowest it will go to is 2.56 amps
but it could be some leakage on any of the other output transistors ? 
i get over 100w on all hf, but only 84.7w on 6m, and 44w on vhf and uhf starts at 34w but then drops very fast to 27w, the temp gauge 
rises high very fast when on uhf, I am using a calibrated Bird 4391 to do these tests in to a very good 50ohm dummy load,
but i suppose the best way to test is to test the current were it goes in to each output trany, what do you all think,
Thanks Dave 2E0DMB


Re: what power are users getting out of there radios on uhf

D C *Mac* Macdonald
 

Are there any variable caps in the TX lineup
that MIGHT be touched up to equalize the
output across the whole band?  VERY small
adjustments to avoid screwing EVERYTHING
up if you mess with it!
 
73 - Mac, K2GKK/5
Since 30 Nov 1953
k2gkk hotmail com
Oklahoma City, OK
USAF & FAA, Retired
Icom - Since 1972
(IC-21 was first one)


From: ic7000@groups.io <ic7000@groups.io> on behalf of Mike Herbert <wb6jkv@...>
Sent: Saturday, April 23, 2022 12:20
To: ic7000@groups.io <ic7000@groups.io>
Subject: Re: [ic7000] what power are users getting out of there radios on uhf
 
35 in the 440 band but 22-25 on 420-425 MHz.

73 de: WB6JKV 

Sent on the fly via my S21+5G & Verizon please ignore typos, errors etc


-------- Original message --------
From: davebb123456 <davidbrowne76@...>
Date: 4/23/22 7:15 AM (GMT-08:00)
To: ic7000@groups.io
Subject: [ic7000] what power are users getting out of there radios on uhf

Hi what power are users getting out of there radios on uhf, are they seeing 35w as per icom specs,
Thanks Dave 2E0DMB


Re: what power are users getting out of there radios on uhf

Mike Herbert
 

35 in the 440 band but 22-25 on 420-425 MHz.

73 de: WB6JKV 

Sent on the fly via my S21+5G & Verizon please ignore typos, errors etc


-------- Original message --------
From: davebb123456 <davidbrowne76@...>
Date: 4/23/22 7:15 AM (GMT-08:00)
To: ic7000@groups.io
Subject: [ic7000] what power are users getting out of there radios on uhf

Hi what power are users getting out of there radios on uhf, are they seeing 35w as per icom specs,
Thanks Dave 2E0DMB


what power are users getting out of there radios on uhf

davebb123456
 

Hi what power are users getting out of there radios on uhf, are they seeing 35w as per icom specs,
Thanks Dave 2E0DMB


Re: i can not get my radio in to adjustment mode

davebb123456
 

Thanks ,I always like updates, some times I read a load of posts on forums, and then I do not find out what has happened,
There was a lot of good ideas, so I had to let all know how it went,
Thanks Dave 2E0DMB

On Mon, 18 Apr 2022, 22:57 Hoffy, <markvk4oy@...> wrote:

Well Done!!! Thanks for the updates.

Hoffy - VK4OY

On 19/04/2022 4:47 am, davebb123456 wrote:
Hi have not done the driver heatsink compound yet, but i have now got the remote socket working correctly and i can put the radio into Adjust Mode, 
Thanks for all of your help and ideas,
Thanks Dave 2E0DMB


Re: i can not get my radio in to adjustment mode

Hoffy
 

Well Done!!! Thanks for the updates.

Hoffy - VK4OY

On 19/04/2022 4:47 am, davebb123456 wrote:

Hi have not done the driver heatsink compound yet, but i have now got the remote socket working correctly and i can put the radio into Adjust Mode, 
Thanks for all of your help and ideas,
Thanks Dave 2E0DMB


Re: i can not get my radio in to adjustment mode

davebb123456
 

Hi have not done the driver heatsink compound yet, but i have now got the remote socket working correctly and i can put the radio into Adjust Mode, 
Thanks for all of your help and ideas,
Thanks Dave 2E0DMB


Re: i can not get my radio in to adjustment mode

davebb123456
 

UPDATE
i have found the problem , with the civ not working to get into the setup menu, inductor EP2405 is sticking up in the air, it is only making contact with the cive socket ground side, and not connected to the track that it should be, it looks that some one has done this, (maybe to stop some one playing with the menu , and tacking the radio back to them for repair, only an idea, i am going to now correct this, , I will keep you all posted,
Thanks Dave 2E0DMB


Re: i can not get my radio in to adjustment mode

 

I have always put some heat sink compound on it, just to be on the safe side. 
To me keeping it as cool as possible is a good thing as I have seen pictures of the board charred and unusable. I have not seen this myself, however. 


Re: i can not get my radio in to adjustment mode

davebb123456
 

ok thanks, as it is still working , would it be a good idea to put some compound on it, as a lot have gone bad,
thanks Dave


Re: i can not get my radio in to adjustment mode

 

Many of the driver boards have either no or very little heat sink compound on them. 
Be careful with the board as they are no longer available. 


Re: i can not get my radio in to adjustment mode

davebb123456
 

Ok I have got some more info civ and cive go to pins 9+10 of J2252 of the logic unit, so testing from remote jack plug, the civ does connect to pin 9 , but on pin 10 the connection is lost from cive, there are some small inductors between the civ socket and the j2252 connector, I will have to lift the main PCB and have a look,
Thanks Dave
I will keep you posted

On Mon, 18 Apr 2022, 13:32 davebb123456 via groups.io, <davidbrowne76=gmail.com@groups.io> wrote:
Hi also it looks like there is no heat sink compound on the pa driver board , I see this is very common ,as on TRX bench YouTube channel,so I may as well do this while I am in the radio,
I have also found some solder balls rolling about the pa board, and I have cleaned a lot of flux off, I see to remove the pa board I have to un-solder the driver board, is there anything that I am missing,I do have all of the correct equipment and knowledge to do this,
Thanks Dave 2E0DMB

On Mon, 18 Apr 2022, 00:49 John Mardock, <j@...> wrote:
With power off, remove the covers and with a multimeter check to make sure the PCB lands associated with that jack are actually shorted. I have seen dirty/contaminated/corroded jacks. Have also seen the jacks break the connections at the PCB ie land to run. 
Alternately you might try applying a small amount of contact cleaner to the plug and exercising the plug/jack interface.

GL

John


Re: i can not get my radio in to adjustment mode

davebb123456
 

Hi also it looks like there is no heat sink compound on the pa driver board , I see this is very common ,as on TRX bench YouTube channel,so I may as well do this while I am in the radio,
I have also found some solder balls rolling about the pa board, and I have cleaned a lot of flux off, I see to remove the pa board I have to un-solder the driver board, is there anything that I am missing,I do have all of the correct equipment and knowledge to do this,
Thanks Dave 2E0DMB

On Mon, 18 Apr 2022, 00:49 John Mardock, <j@...> wrote:
With power off, remove the covers and with a multimeter check to make sure the PCB lands associated with that jack are actually shorted. I have seen dirty/contaminated/corroded jacks. Have also seen the jacks break the connections at the PCB ie land to run. 
Alternately you might try applying a small amount of contact cleaner to the plug and exercising the plug/jack interface.

GL

John


Re: i can not get my radio in to adjustment mode

davebb123456
 

Hi John
I am going to test for any resistance on the remote socket, what is the best way to get to the solder points of this socket, do I remove the top board, or is it from the bottom side of the radio,
Thanks Dave

On Mon, 18 Apr 2022, 10:51 davebb123456 via groups.io, <davidbrowne76=gmail.com@groups.io> wrote:
Hi John you are thinking the same as me, yes I used contact cleaner on the plug,
The civ works with ham radio deluxe, but I will open the radio and look if it is showing as a short,
Like you said there maybe some resistance,
Thanks Dave

On Mon, 18 Apr 2022, 00:49 John Mardock, <j@...> wrote:
With power off, remove the covers and with a multimeter check to make sure the PCB lands associated with that jack are actually shorted. I have seen dirty/contaminated/corroded jacks. Have also seen the jacks break the connections at the PCB ie land to run. 
Alternately you might try applying a small amount of contact cleaner to the plug and exercising the plug/jack interface.

GL

John


Re: i can not get my radio in to adjustment mode

davebb123456
 

Hi John you are thinking the same as me, yes I used contact cleaner on the plug,
The civ works with ham radio deluxe, but I will open the radio and look if it is showing as a short,
Like you said there maybe some resistance,
Thanks Dave

On Mon, 18 Apr 2022, 00:49 John Mardock, <j@...> wrote:
With power off, remove the covers and with a multimeter check to make sure the PCB lands associated with that jack are actually shorted. I have seen dirty/contaminated/corroded jacks. Have also seen the jacks break the connections at the PCB ie land to run. 
Alternately you might try applying a small amount of contact cleaner to the plug and exercising the plug/jack interface.

GL

John


Re: i can not get my radio in to adjustment mode

John Mardock
 

With power off, remove the covers and with a multimeter check to make sure the PCB lands associated with that jack are actually shorted. I have seen dirty/contaminated/corroded jacks. Have also seen the jacks break the connections at the PCB ie land to run. 
Alternately you might try applying a small amount of contact cleaner to the plug and exercising the plug/jack interface.

GL

John


Re: i can not get my radio in to adjustment mode

davebb123456
 

Hi Paul
Yes I have been holding those buttons down when switching on , as in the service manual,
Thanks Dave, all help is appreciated,

On Sun, 17 Apr 2022, 21:56 Paul Hansen, <pwhansen@...> wrote:

Not only does CI-V have to be shorted, you have to hold down the Pre Amp and Tuner buttons simultaneously with turning it on. The 7000 is a difficult radio to work on in the adjustment mode so good luck.

 

Thank You

 

Paul W. Hansen, W6XA

Amateur Radio Service

2134 Carthage Road

Tucker, GA 30084

(864) 222-3539

www.amateurradioservice.com

 

From: ic7000@groups.io [mailto:ic7000@groups.io] On Behalf Of Hoffy
Sent: Sunday, April 17, 2022 15:58
To: ic7000@groups.io
Subject: Re: [ic7000] i can not get my radio in to adjustment mode

 

I guess that if there is something amiss in the initial programming of the radio then resetting it will not rectify the problem.

Hoffy

On 18/04/2022 5:53 am, davebb123456 wrote:

I have done a full reset,

Dave

 

On Sun, 17 Apr 2022, 20:51 Hoffy, <markvk4oy@...> wrote:

Sorry Dave, I hope that somebody has the right answer for you. I wonder if there is some sort of programming /software glitch in the radio.

Once again I wish you all the best.

Hoffy - VK4OY

On 18/04/2022 5:38 am, davebb123456 wrote:

Hi 

Yes yes it is

 A 3.5mm mono jack plug ,so only 2 pins to short, 

I have used this plug for cat control, with this radio and ham radio deluxe,

So I don't know why it will not go into adjustment mode,

Thanks Dave

 

On Sun, 17 Apr 2022, 20:28 Hoffy, <markvk4oy@...> wrote:

Hi Dave, Hoffy here, just double checking that the 1/8th plug that you are using has been "shorted" as per the instruction of the manual.

Cheers and all the best,

Hoffy - VK4OY

On 16/04/2022 5:37 am, davebb123456 wrote:

i can not get my radio in to adjustment mode, am i doing something wrong, i have a uk (10) model , i am doing as page 16 of the service manual says,and the radio just starts up as normal, my civ port is working and i am using the same jack plug to try and get the radio in to adjust mode,
Please help,
Thanks Dave 2E0DMB
 


Re: i can not get my radio in to adjustment mode

Paul Hansen
 

Not only does CI-V have to be shorted, you have to hold down the Pre Amp and Tuner buttons simultaneously with turning it on. The 7000 is a difficult radio to work on in the adjustment mode so good luck.

 

Thank You

 

Paul W. Hansen, W6XA

Amateur Radio Service

2134 Carthage Road

Tucker, GA 30084

(864) 222-3539

www.amateurradioservice.com

 

From: ic7000@groups.io [mailto:ic7000@groups.io] On Behalf Of Hoffy
Sent: Sunday, April 17, 2022 15:58
To: ic7000@groups.io
Subject: Re: [ic7000] i can not get my radio in to adjustment mode

 

I guess that if there is something amiss in the initial programming of the radio then resetting it will not rectify the problem.

Hoffy

On 18/04/2022 5:53 am, davebb123456 wrote:

I have done a full reset,

Dave

 

On Sun, 17 Apr 2022, 20:51 Hoffy, <markvk4oy@...> wrote:

Sorry Dave, I hope that somebody has the right answer for you. I wonder if there is some sort of programming /software glitch in the radio.

Once again I wish you all the best.

Hoffy - VK4OY

On 18/04/2022 5:38 am, davebb123456 wrote:

Hi 

Yes yes it is

 A 3.5mm mono jack plug ,so only 2 pins to short, 

I have used this plug for cat control, with this radio and ham radio deluxe,

So I don't know why it will not go into adjustment mode,

Thanks Dave

 

On Sun, 17 Apr 2022, 20:28 Hoffy, <markvk4oy@...> wrote:

Hi Dave, Hoffy here, just double checking that the 1/8th plug that you are using has been "shorted" as per the instruction of the manual.

Cheers and all the best,

Hoffy - VK4OY

On 16/04/2022 5:37 am, davebb123456 wrote:

i can not get my radio in to adjustment mode, am i doing something wrong, i have a uk (10) model , i am doing as page 16 of the service manual says,and the radio just starts up as normal, my civ port is working and i am using the same jack plug to try and get the radio in to adjust mode,
Please help,
Thanks Dave 2E0DMB
 


Re: i can not get my radio in to adjustment mode

Hoffy
 

I guess that if there is something amiss in the initial programming of the radio then resetting it will not rectify the problem.

Hoffy

On 18/04/2022 5:53 am, davebb123456 wrote:

I have done a full reset,
Dave

On Sun, 17 Apr 2022, 20:51 Hoffy, <markvk4oy@...> wrote:

Sorry Dave, I hope that somebody has the right answer for you. I wonder if there is some sort of programming /software glitch in the radio.

Once again I wish you all the best.

Hoffy - VK4OY

On 18/04/2022 5:38 am, davebb123456 wrote:
Hi 
Yes yes it is
 A 3.5mm mono jack plug ,so only 2 pins to short, 
I have used this plug for cat control, with this radio and ham radio deluxe,
So I don't know why it will not go into adjustment mode,
Thanks Dave

On Sun, 17 Apr 2022, 20:28 Hoffy, <markvk4oy@...> wrote:

Hi Dave, Hoffy here, just double checking that the 1/8th plug that you are using has been "shorted" as per the instruction of the manual.

Cheers and all the best,

Hoffy - VK4OY

On 16/04/2022 5:37 am, davebb123456 wrote:
i can not get my radio in to adjustment mode, am i doing something wrong, i have a uk (10) model , i am doing as page 16 of the service manual says,and the radio just starts up as normal, my civ port is working and i am using the same jack plug to try and get the radio in to adjust mode,
Please help,
Thanks Dave 2E0DMB
 

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