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Racal RA6790GM in need of repair facility

 

Hello,? I'm new here.? I have and have had for many years a RA6790GM that for years has worked flawlessly.? A few weeks ago I could no longer program frequencies.? Everything lights up with Zero's and the fault light was lit.? I replaced the backup battery and the fault light is now off.? I did the reboot several times but still not operational.? The removed battery checked OK.
I'm located in Connecticut and wonder where I may find a repair facility..?
Arnie D.
K1NFE
nelo44@...
 

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Hi Arnie,

Did you try running the BITE initialization?

If not, just hold down the Lock button, then AM button, then release both buttons. If it finds a fault, take note of the code on the screen.

Cheers,

Peter - VK2AN

From: [email protected] <[email protected]> on behalf of Arnie Depascale <nelo44@...>
Sent: Tuesday, 4 February 2025 10:41 AM
To: [email protected] <[email protected]>
Subject: [RacalRadio] Racal RA6790GM in need of repair facility
?
Hello,? I'm new here.? I have and have had for many years a RA6790GM that for years has worked flawlessly.? A few weeks ago I could no longer program frequencies.? Everything lights up with Zero's and the fault light was lit.? I replaced the backup battery and the fault light is now off.? I did the reboot several times but still not operational.? The removed battery checked OK.
I'm located in Connecticut and wonder where I may find a repair facility..?
Arnie D.
K1NFE
nelo44@...
 


You may have a power supply problem, if you have a shorted capacitor the receiver might act this way, I have attached a file that might help.
?
Gary E Wingerd
RACAL retired

---------- Original Message ----------
From: "Arnie Depascale" <nelo44@...>
To: [email protected]
Subject: [RacalRadio] Racal RA6790GM in need of repair facility
Date: Mon, 03 Feb 2025 15:41:09 -0800

Hello,? I'm new here.? I have and have had for many years a RA6790GM that for years has worked flawlessly.? A few weeks ago I could no longer program frequencies.? Everything lights up with Zero's and the fault light was lit.? I replaced the backup battery and the fault light is now off.? I did the reboot several times but still not operational.? The removed battery checked OK.
I'm located in Connecticut and wonder where I may find a repair facility..?
Arnie D.
K1NFE
nelo44@...

Troubleshooting The RACAL RA6790.doc
Troubleshooting The RACAL RA6790.doc

 

On 2/3/2025 3:41 PM, Arnie Depascale wrote:
Hello,? I'm new here.? I have and have had for many years a RA6790GM that for years has worked flawlessly.? A few weeks ago I could no longer program frequencies.? Everything lights up with Zero's and the fault light was lit.
Sounds like a tantalum capacitor to me.? If you can check all the supply voltages and find one that's zero, then unplug boards one at a time you will find the culprit soon enough.? Favorites are the +/- 15V rails and the 20V rail into the A7 board which has a string of tants that can go one after the other, real annoying that is :^)

73 - Dan

ac6ao

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