Unbelievably enough, I started looking again for that spring-finger and, lo and behold, it was laying on my workbench under where I'd been working on the RF deck. I don't know how that survived where it is with all the work I've been doing. Really weird.
On second/third/fourth/fifth look, I think those fingers may have originally been soldered as opposed to a "peened" pin that stick out of the main pin. I'm going to see about soldering the original one back in place and, hopefully, that's a fix! Thanks to all for all the feedback. Barry - N4BUQ > Jacques, > > I looked in the sockets and didn't see the remains of that spring. I don't > see > it anywhere on my workbench either. When I removed all the coils and > transformers so I could clean the deck and gears better, I remember seeing it > was missing at that time. I suspect it was missing before I got the radio. > > I thought about soldering as well. I don't think there's much left of that > original "pin" that was used to secure the mini-banana plug's springs. There > is enough left, though, that might allow soldering. > > Thanks for the tips, > Barry - N4BUQ > >> Barry, if the contact spring missing in the Z221 was not left in the >> matching socket, your best option is effectively to steal the contact spring >> from the center pin and soldering it to the top left one. >> Z221 is an essential part of the 1st variable IF (9.5 to 17.5 MHz). >> >> These contacts looks like dwarf-sized banana plugs. >> All the ones in my own R-390 were found OK, but I remember about another >> member of the group seeking advice for the same kind of problem few years >> ago. >> If you can effectively solder the "liberated" 4 leaf spring contact from the >> center pin to the left top contact, you only need that Z221 be put back in >> place to achieve a proper contact. >> >> Other solutions can be tried, like making a new spring from thin brass >> stock. >> Or using a small screw in the tiny hole you planned to make. >> I nevertheless believe that soldering will be sufficient. >> >> Another area that was improved with the "A" version... >> >> 73, Jacques, VE2JFE in Montreal >> >> 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 ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:R-390@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
