[R-390] Damaged Pins on Z221 and Z214
Barry
n4buq at knology.net
Sat Sep 14 10:23:16 EDT 2024
Jim,
While I might try repairing the coil I have, I'd be interested in getting a replacement. Can you let me know costs? I private email is fine if you'd prefer.
Thanks!
Barry - N4BUQ
> Barry
> I have an organ donor R-390/URR that is missing most of the coils but it does
> have Z219, Z220 & Z221 still in place but missing the ferrite slugs and racks.
> Jim
> Logic: Method used to arrive at the wrong conclusion, with confidence. Murphy
>
> On Friday, September 13, 2024 at 09:46:11 PM CDT, Barry <n4buq at knology.net>
> wrote:
>
> After thinking about it a while, I'm wondering if I can remove the "riveted" top
> from that unused center pin on Z221 which would release that spring-fingered
> mechanism from that pin. If so, I could move that to the pin that is used and
> then peen that center part where it would mushroom over the spring fingered
> part. There's not much left of the center part that can be "mushroomed" so
> that might not work; however, I could also drill a tiny hole in the end of that
> pin and drive tiny rivet-shaped pin in that could hold the spring fingered part
> in place. Tedious and fraught with problems but, aside from finding a
> replacement, it might be my best bet.
>
> Barry - N4BUQ
>
>> (Resending using plain text.)
>>
>> I started reassembling the coils in the RF deck of my R-390 and discovered some
>> damage the one of the pins on Z221 (upper left pin in the first image
>> attached). The spring contact assembly is missing entirely. I notice that the
>> center pin is not connected inside the housing but I think it would be a
>> significant effort to try to remove both pins and replace the bad one with the
>> good one.
>>
>> When I disassembled Z214, I noticed one of the small fingers had broken off
>> (second image attached). The finger was left where the coil plugs in and I
>> saved the finger. I may have rocked the can just a little too much (it was
>> very difficult to remove) and that may have broken that finger. While I think
>> that pin will still make sufficient contact, I may still try to solder that
>> finger in place.
>>
>> What are my possible options for Z221? I presume there's not a stash of those
>> coils (Z219, Z220, Z221 as I think they're all the same?) somewhere. Any
>> ideas?
>>
>> Something tells me the combination of the broken slug I repaired and getting
>> Z221 properly connected (and a fresh alignment) will make quite a difference
>> for this radio.
>>
>> Thanks,
>> Barry - N4BUQ
>>
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