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In Reply to: RE: Hi Mark posted by 1973shovel on September 25, 2016 at 09:05:15
Thanks so much! Thats an answer and a half to my question. You went above and beyond! You also answered another question, your the tuner man.
Last night I got my FM-3 going. This might be the second time since it was lying dormant for 3 years that I turned it on for a while. It's in my bedroom with a Dyna 70. They make nice night lights as well as sounding real good. The FM-3 was pulling every thing in like nothing before. I did notice in the FM-3's rebuild a pc board with a small army of caps all lined up near the tuning eye tube.
Shovel, do you think that the caps needed more time to reform?....Also, I learned a new word,(dope slap) which I'd like to send one via e-mail to the B&O speaker finder guy...if you know what I mean. Thanks for the info....and if you ever hang out the tuner man shingle I'd like to be your first customer....Mark K.
You reminded me that a friend, now long gone from audio, modded my FM3 decades ago. He made some changes that he said mimicked the Marantz 10 front end which I unfortunately can't describe. But I also recall he changed solid state diodes in the circuit for tube diodes which he said made a nice difference in sound. I think he replaced all the diodes but one because it was a difficult mod he didn't have time for in one weekend.
Hi Shovel, Timbo and Hahax too.
A few years ago I bought a Dyna FM-3 for 200 dollars. It was from a site on the computer which was dedicated only to the FM-3. They had one for sale that contained all their mods.They aligned it too. I'm trying to re find that site. They were the first to provide an optional black faceplate before I saw them for sale on Ebay.
Shovel, I'm not a big believer in break in times but the more time I have had the FM-3 on the better things are sounding....cap loading we talked about. One thing that looks different from stock is this little pc board cut out on one end for a tube right behind the tuning eye. I think Sheldon Stokes might have come up with these as I've seen them alot in images of the FM-3 on a Google search. It looks like a little army of caps all the same size lined up for duty, nothing like stock.
On the FM-6. Mike Samra's a great guy and freind but I wouldn't want to take his time up with an AM tuner as a normal person might just get a cheap radio to listen to AM. It will be added to my list of projects. Shovel from what you told me if I go slow an methodic I think I can make a stab at trying to get the FM-6 back on track. If I had a MacIntosh 78 or a nice H.H. Scott tuner then I wouldn't hesitate to get Mike S. on it. Shovel, I will copy your instructions and staple them as an addition to the manual. Even if I can't get to it tomorrow I do want to get that tuner going and your efforts will be recorded for me and anyone else that it can help getting a nice piece of gear like the FM-6 or FM-5 going.
Shovel, someone spared me administering the dope slap on the B&0 speaker guy. He down right blasted him! I forgot his name but I'd like to give him a nice (non-dope slap) on the back for doing so.You tried to help him and he gave you a Pearl Harbor job!
Take care and keep those stories and the info coming...thanks ...Mark K.
I'm from Missouri too, Mark, but it sounds like you've just proved "settling in times" to yourself, via your FM-3. I've had similar experiences with other components.
Without a picture, I can't say for sure what your "little army of caps all the same size lined up for duty" is for. Are there any resistors on the board? If so, given its placement, it might be David Berning's corrected de-emphasis circuit, described below in an FM-3 modification article.
I believe Sheldon Stokes marketed (or perhaps still does) this circuit on a board for the FM-3.
I found a post from back in July on the Ghost Town formerly known as the Asylum's Dynaco-Doctor Forum. You might take note of how many bad electrolytic caps the author found. (link below)
Hi Shovel, thanks for all the info.
After a long search on the net I could not find the FM-3 tuner site that did my FM-3. I did go on Dynaco FM-3 images on Google and compared my little army of caps board to the pics. My board is a Chauncey/Epperson pc mod if your interested.It's exact.
Shovel, I have forgotten the procedure to add a picture to what I write. I have Windows 10 and cut and paste is not working for me like it used to. If you know real quick I'd love a lesson. I can find the pictures but have trouble posting them to my messages...thanks Shovel.
Shovel, I'm from Maine all my life. The closest I ever got to Missouri is being a fan of the Kansas City Chiefs when I was in the seventh grade. I still have a shirt 86, Buck Buchanan I saved up for, 1970.
Shovel, before I go I have some various Heath tube tuners I'd like to get your thoughts on. Maybe I shouldn't stray from the topic though. You are ( Tuner Man), you can't help it, you know your stuff. Thanks for sharing...Mark Korda.......PS. What about the Outlaw Josey Wales, Clint Eastwood, when he gives the pursuit a (Missouri Boat Ride).....
Shovel: "I know a girl in Maine"
Shovel: "No, we're just good friends"
Bah Dump bump!
Ok, that's enough of that. I've never been to Maine. I got close this summer (Laconia NH). We were supposed to ride up into Maine, but it didn't happen. Next year, hopefully.
The only method I know to add a picture to your post on the Asylum is to first download it to your computer.
1. Right click on the picture you want to save.
2. Choose "save picture as" from the menu.
3. Save the picture to your computer. I use my desktop for temporary pictures.
4. At the bottom of the Asylum "Post a Message" box (below where you write text) are several choices. One is "Upload Image" browse button.
5. Click "Browse" and find the picture on your desktop (or wherever you saved it) and click on it. When you preview message, the picture will upload.
More information at the link below.
Thanks so much for those (easy) instructions. They are game changing for me. The Windows 10 book for dummies couldn't do that.
Great joke! I never heard that one, really. Bangor is about 150 miles north from me and Boston 100 miles south. I'm outside of Portland now....Old Orchard Beach. In the summer it's a tourist town with a lot of Canadians from Quebec around.
Later tonight I will practice the new procedure you have taught me....thanks again Shovel....Mark.
I'm looking forward to seeing the pictures you post, especially Nina Hartley!
Hi Shovel, this is a Down East style cabinet I made with a hand saw, sheet rock screws,barn board and some old weathered pieces of a freinds old lobster traps. The rubber feet are used on a ground fishing boats trawl nets.
I made this a few years ago and have the picture already in my picture file but did write down the procedure you gave me so I can get a picture from the computer and not one I have already.....Ps. If Nina Hartley threw her hat in the ring for president right now it could be an upset land slide!...Mark K.
Hi Shovel, I realize the importance of (Step #5),the preview. I wouldn't want when asking about info for the Heathkit FM-3A mono tube tuner a picture of Nina Hartley getting attached...why...why that may get me booted out of Radio Road.....Mark.
I can't vouch for that though; the AM in mine is Bjorked ;-)
I was going to look into the contacts in the "air variable" tuning capacitor, but i was... dissuaded... by all of the stuff decorating it. No simple "pop off the shield and have at" in the AF-6.
Yeah, my Dynaco electronics collection is pretty motley. The SCA-35's nice.
all the best,
Thanks Mark, you're too kind. But actually I'm not the tuner man.
I'd never looked at the AF-6 schematic before, so I thought I'd check it out. What I did was exactly what I suggested to you in my first reply, which was to stick to the power supply and output section as places to start.
I wouldn't know the first thing about improving the radio frequency performance of a tuner, and don't have the equipment to align one. You might want to contact inmate Mike Samra. I believe he does tuner alignments, but you'd have to check with him.
The caps in your FM-3 could need some more time to settle down, especially after not seeing power for three years. Give that thing plenty of ventilation too, they run hot !
Speaking of caps, the nicest upgrade I made to one of my FM-3 tuners was to change the two output caps (C82 and 83) to 0.1 µF Russian FT-3 Teflon capacitors. They're about two inches long, and you have to mount them vertically, so they just barely fit under the FM-3 cage. You'd need something to insulate the "top" lead from the cage, just in case it touches. I think I used electrical tape or heat shrink. They sound exceptional in the Dynaco FM-3, and are a bargain. I've included a link, if you're interested. No affiliation, of course.
Yeah, the B&O guy. He needs to take a lesson from you as to how to pose a direct question. He asks a vague, open-ended question, then gets his panties in a twist when he doesn't get the type of answer he wanted. It takes all kinds.
Have fun with your tuners.
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