President Lincoln 1 Squelch problem

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delta-xray
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President Lincoln 1 Squelch problem

Post by delta-xray » 09 Nov 2018, 12:40

Hi guys,

my Lincoln 1 has a strange problem with squelch.
When radio is on and tune it on squelch, it stays in squelch even if you turn the knob back.
Only thing to put it "out of squelch" is to switch radio off and on again.

Adjusting VR102 does not solve this issue.
Anybody an idea? Leaking capacitors maybe?

Thanks! Ton

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KlondikeMike
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Re: President Lincoln 1 Squelch problem

Post by KlondikeMike » 09 Nov 2018, 16:41

I am presently working on a Lincoln v1 right now. It has a few problems including a similar odd behavior with the squelch as well. First step, replace ALL electrolytics and then start troubleshooting. I'm half way through and when I get them all replaced I'll post my results.
9WR2000

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1968neil
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Re: President Lincoln 1 Squelch problem

Post by 1968neil » 09 Nov 2018, 18:43

I have some notes from back in the day for the same fault, Can remember the fault was intermittent on mine so as Mike says maybe electrolytics drying up ? There are two to check in my list, either way id replace them anyway :

Regards
Neil

Q109
D115
C37
C33

TP = Pin 8 IC101

delta-xray
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Re: President Lincoln 1 Squelch problem

Post by delta-xray » 09 Nov 2018, 19:55

Thank you guys for a quick response.

I will start to recap the whole transceiver, parts are ordered today.
Will post the result as soon as i finished the job.

Best 73 from the Netherlands!
Ton

delta-xray
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Re: President Lincoln 1 Squelch problem

Post by delta-xray » 14 Nov 2018, 13:12

Replaced all caps on main board and Lincoln is perfectly
back in business!

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1968neil
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Re: President Lincoln 1 Squelch problem

Post by 1968neil » 16 Nov 2018, 17:28

Thanks for the update :)
Enjoy ..... :)

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ch25
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Re: President Lincoln 1 Squelch problem

Post by ch25 » 16 Nov 2018, 17:33

So... which cap was responsible for bad sq?
Chris
You can't have too many antennas...

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