As of this writing after 4 days & 114 members reading my previous post nobody has given me any response. As of today even White's Customer Service hasn't given me accurate info on my CM#3, Serial# F291 manufacture date P/68. I've attached a photo this time. I've never owned a Metal Detector before but I an a Ham Radio operator so I'm pretty savvy on electronic things. Here's where I'm at; This unit takes 2 - 9V batteries & they both check out perfectly on the meter. I don't really know what the Radio Tuner is for. When I turn the unit on I get a tone on the speaker & when I put the Null pointer to 10pm position & the Radio dial at 10 I get the loudest tone. I put a few quarters on the floor & when I sweep the coil across them the tone goes up as I pass over them however the dial on the meter doesn't move. Remember the meter does work when I test the batteries. So where do I go from here? Responses would be greatly appreciated.
Find's Treasure Forums
Welcome to Find's Treasure Forums, Guests!
You are viewing this forums as a guest which limits you to read only status.
Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.
Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.
Click here to register!
Need Support Help?
Cannot log in?, click here to have new password emailed to you
Changed email? Forgot to update your account with new email address? Need assistance with something else?, click here to go to Find's Support Form and fill out the form.
Help Still Needed on Vintage White's Coinmaster
- Thread starter mvpfrank
- Start date
Carl-NC
Active member
Frank, the problem with your CM3 is that date: 1968. All the people who were involved with the design and production of that model are dead. Also, back then designs were changing on a nightly basis. I collect old vintage detectors, probably got around 50 of the old White's, and it's tough to find 2 identical units. Your CM3 appears to be a BFO, but there was also a TR version of the CM3. So there are variants galore.
Although White's tries to service anything post-tube era, they don't have an old-timer who knows these old circuits. Like I said, they're all gone. And they do have a lot of the old schematics, but they are on huge mylar sheets and not easy to find or scan. If you really want to get this thing back to 100%, my suggestion is to trace out the circuit. Should take a couple of hours. If you can't figure out the problem, post the schematic and I'll jump back in.
Although White's tries to service anything post-tube era, they don't have an old-timer who knows these old circuits. Like I said, they're all gone. And they do have a lot of the old schematics, but they are on huge mylar sheets and not easy to find or scan. If you really want to get this thing back to 100%, my suggestion is to trace out the circuit. Should take a couple of hours. If you can't figure out the problem, post the schematic and I'll jump back in.