I recently picked up a kit built T1 tuner which doesnt quite work. On
power up the yellow led flashes thrice then then stops and thats all we get.
It is not well built so Im going to reflow all joints and carefully check
everything, BUT, I wonder whether anyone else has come across this fault
mod
I just assembled the T1 kit, but am having an issue in the final check phase of
the Control Board.
"Resistance across capacitor C19: between 137 K-ohms and 148 K-ohms. Press S2
and confirm reading drops to between 117 K-ohms and 135 K-ohms.”
I’m getting around 60K or 43K with my Fluke 117, depe
reply.? Does anyone have any suggestions for a more permanent
fix?? Thank you in advance.? Dave, K8RXB?Sent from my Galaxy
--
Message: 3
Date: Tue, 25 May 2021 15:01:18 -0400
From: Erik Tkal
To:d...@w3fpr.com
Cc:Elecraft@mailman.qth.net
Subject: Re: [Elecraft] T1 Tune
Erik,
Check and double check the orientation of the diodes. That is the most
likely reason for you measurement results.
73,
Don W3FPR
On 5/23/2021 5:39 PM, Erik Tkal wrote:
I just assembled the T1 kit, but am having an issue in the final check phase of
the Control Board.
"Resistance acros
Since that is the case, check the value of the resistors and check out
the soldering under magnification.
73,
Don W3FPR
On 5/24/2021 3:08 PM, Erik Tkal wrote:
Hi Don,
Nope, D3 and D4 are correct, and the LEDs check out per the test...
Hi Don,
Everything appears correct and in place, already used magnification to check,
and individual resistors all seem to measure correctly. I still think it's my
multimeter in auto mode. I went back and retried the initial test using manual
ranging and if I set the range to 600K it shows a
Erik,
Yes, using auto ranging on the DMM can cause false readings. Try to set
the fixed range a bit above the highest expected resistance for the best
results. It all depends on the voltage the DMM applies to the circuit.
Too high a voltage can make ICs and transistors conduct causing a low
Hi Don,
Yeah, I don’t often perform measurements on components already installed in a
circuit, so the behaviour was confusing. I thought I bought a nice DMM but I
guess it was just a fluke… ;-)
Anyway, I got it finished and everything is operational, now just have to wait
for the IC-705 inter
And for the bands to cooperate!! :-)
Congrats, Erik.
> On May 25, 2021, at 1:01 PM, Erik Tkal wrote:
>
> Hi Don,
>
> Yeah, I don’t often perform measurements on components already installed in a
> circuit, so the behaviour was confusing. I thought I bought a nice DMM but I
> guess it was ju
To:d...@w3fpr.com
Cc:Elecraft@mailman.qth.net
Subject: Re: [Elecraft] T1 Tuner Kit Control Board final check issues
Message-ID:
Content-Type: text/plain; charset=utf-8
Hi Don,
Yeah, I don?t often perform measurements on components already
installed in a circuit, so the behaviour was confusin
10 matches
Mail list logo
