|Repair of SPE EXPERT 1k-fa, Automatic Antenna Tuner||
My tuner stop tuning on bands
with higher frequency than 7 MHz.
It tunes fine on 160 meter and 80 meter, with full power out.
I am a little impressed of SPE, Mr. Dante Specchioli - What a fine and express service from him!
I wrote to SPE, Rom, and
Mr. Dante Specchioli send me a description on, how to remove the ATU from the EXPERT.
This you can find here: ATU_Removal.pdf
Ones before, I had the 1k-fa in Rom, Italy for repair under the warranty, and I can see where they have done some soldering on the boards.
Because of Mr. Dante Specchioli told me, that SPE was starting holly-day until september 1. 2012, and the FIELD-DAY Contest starts at the same time, I will try to find the error my self.
|These 2 boards is put
together with 9 screws.
No cables between the boards.
|The bottom of the boards.|
|Bottom of the
Here you see 3 STAND-UP's in each end of the board, plus 3 STAND-UP's on the PCB.
A total of 9 screws to remove for disassembling.
|Bottom of the
Upper left corner the 2 ULN2003 has bin desordered and replaced with some new.
Her I can see, that a new relay is mounted, and NOT aligned perfectly with all the other relays.
I suspect this relay to be the reason to my faulty ATU.
NO, not this one, only K29, market with yellow...
|Now I have to measure on the ATU, and finding the ERROR...|
Not the best weather to do the garden.
Turn on the radio ?
No... better try to find the ERROR in my ATU!
Start the lab.power, adjust to 11,5 volt.
Check all the relays on
the INDUCTOR BOARD...
Does they make a click-sound ?
This one MUST be defect, K29, same as last time... the yellow marker...
Some times you got lucky...
Relay is removed and PCB
is cleaned, ready to mount the new relay.
Maybe it would be a good idea to switch off the antenna when lightning
Tuesday... Measuring the Capacitors:
The local Carlo Gavazzi dealer made me a call on the telephone to day, Monday.
They have these relay in stock, price 2 EU pc. + expenses, more then 30 EU for 2 pcs of relay... Hmmm..??
|That's a lot of money for 2 pcs. of relays...|
local dealer CYPAX have a compatible relay: RT314-12 SCHRACK 1SK 16A 12V
Not expensive to, abt. 10 EU for 5 pc. all include...
That must bee the case...
NOT waiting on relays anymore...
Thursday the 16. august 2012... The relays is arrived...
END of PROJECT!!!!
|See the pictures here.|
goes slow... This is my LAB...
My work-life ? I am retired computer administrator, Danish Customs and Duty - Age 69 years. - More at http://www.planker.dk
On the picture you will find 3 HOTSPOT, with links to the description of the instruments, not all in English.
End of Project...
Click on the picture to see them in full size...