Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Questions about Restoring a Grebe Synchrophase MU-1
#1

Hi Everyone,

Some time ago, I picked up a rather worn Grebe Synchrophase MU-1. I just love the look of these radios! I'm not sure where it was kept, but the inside absolutely STINKS, so I've started disassembling the breadboard with the intent of cleaning everything to get rid of the smell. After getting most of it apart, I have a few questions.

I opened up one of the original paper-rolled caps. It seems this one is supposed to measure 1.0uF and mine measures 1.2uF. Should I close it back up or replace it with one that is not 90 years old?
   

Next up is the plastic ring that sits on top of the tuning dials. These rings have a small "cup" on the bottom side where the beaded chain snaps in to tie the three tuning wheels together (I presume this is the source of the "synchrophase" name). The problem is that for two of my rings, the little cup that hangs down is broken, so it won't hold the chain. Thus, the three dials will no longer move in unison. Any ideas on how to solve this problem without replacing the part?
   

And finally - at least for now - what is the best way to clean the brass escutcheons on the front? The RadioBoulevard article on these recommends Easy-Off Oven Cleaner, but after 2 hours of soaking, it didn't accomplish much. Any recommendations? The left one was sprayed with Easy-Off and the right one is untouched. I am thinking they are not supposed to look like new and shiny brass... but this isn't to my liking.
   

Thanks for the help!
Eric


Messages In This Thread
Questions about Restoring a Grebe Synchrophase MU-1 - by EricS - 09-18-2014, 08:55 AM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
COLLEAGUES, Thank you all for such good and important suggestions as how to find good replacement parts. I will go fo...palonso — 07:05 AM
Zenith H725
Here's what the inside of AM IFT2 looked like, and the other pic shows the discs I made to take place of the mica and ke...EdHolland — 07:40 PM
Zenith H725
IF2 will need replacement caps. The arcing was severe enough that the mica is pitted and holed where the HT flashed over...EdHolland — 04:04 PM
My Philco 37-116 Restore
Measuring from center tap like the tube voltages show. Cap 127 is isolated from ground. Cap 127 shown in upper left of p...dconant — 08:05 AM
My Philco 37-116 Restore
Are you measuring relative to the centertap or the GND?morzh — 11:57 PM
Philco 610B oscillator wiring
Still not clear on the wiring interface between the 6A7 and oscillator. After refering to the available schematics and s...Tubester — 07:18 PM
Refinishing Ideas
My 37-116 code 121 is the best sounding radio i have...a daily driver. Since we are talking about "changes". ...poulsbobill — 07:18 PM
My Philco 37-116 Restore
Hello, I finally got brave enough to take the cans off the Expander Unit. Got the grid cap wires replaced and back toget...dconant — 06:50 PM
Zenith H725
I got into the first AM IF can today, and found its mica was cracked. Amazing that it was still working. This one makes ...EdHolland — 06:10 PM
Philco model #20
AHH HA , I got it and can’t thank you fellows enough , when I changed the capacitors I took the advice and did not unsol...onlyrick — 02:24 PM

[-]
Who's Online
There are currently 937 online users. [Complete List]
» 3 Member(s) | 934 Guest(s)
AvatarAvatarAvatar

>