So what smokes these things anyway? Lightning? Or is it a problem in the design to be resistive at high potentials? ?I don¡¯t see any soot, which you¡¯d expect from a lightning strike. ?But it was hot enough to shatter the ceramic and melt the contacts. ?A little puzzled on this one.?
Patrick?
NG7I
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On Apr 2, 2021, at 16:09, VE7PS <ve7ps@...> wrote:
?
Patrick:
A while back Paul Kraemer, K0UYA, posted some pics that I believe
are posted on this group that shows a repair job he did on that
switch using a 5 position, 5 or 6 pole switch from Russia that is
still available on E-bay for (I believe) $18.? You mount it
backwards as I recall so the front of the switch is mounted on the
rear, after removing all but two of the wafers.? That leaves you
plenty of shaft to connect to the rest of the shaft going to the
front panel control.? You will have to make up an offset shaft
coupling to connect the two shafts and retain the correct
indication.
I have an MN-2000 here that is in need of that same repair.
If it is not there in the files or pics section, get back to me as I
have them saved too.?
73
Peter
VE7PS
On 2021-04-02 3:36 p.m., Patrick P
wrote:
Here are some pics (if this will work from my
phone)....
Patrick
NG7I
On Apr 2, 2021, at 14:46, Patrick P via
groups.io <sbus1313@...> wrote:
?Gentlemen,
? I got an MN-2000 tuner off eBay last month and finally had
time to test it.? The knob in the upper left ( Alternate /
Match 1 / Match 2 / Direct 1 / Direct 2 ) was seized so upon
further inspection it appears this unit was hit by lightning.?
Does anyone have an extra rotary switch for this tuner?? It's
frozen in Match 1 and the rotary contacts were vaporized /
welded together.? I would really like to keep this old soldier
online if possible.
Regards and 73's
Patrick
NG7I
Patrick P