I installed that the in the v-3 socket and got voltage readings through about 10 vdc lower than before.Īnyway, my immediate problem is to get fm output. I did have a similar looking tube with no identifying marks. Not sure if that is something that happens to old stock tubes. Perhaps I mishandled the tube, but it did work for a while before I discovered it cracked. I purchased it, along with c-2 and some dial cord from an antique radio supplier. I was looking at the tuner over the weekend and noticed that the newly replaced tube, v-3, 6AB4, was broken. The pencil notations on the schematic are my readings with the two replacements installed. C-1 - a two cap canister – is a replacement and seems ok. I’ve attached a few pages from the Sam’s Photofact.Īs noted, I replaced v-3 and c-2. If possible, I would like to establish fm reception before I get too deep into any further restoration. I would appreciate any advice on how to proceed. Bogen’s Easy Design line of horn loudspeakers are compact. However, all readings were measurably higher than spec. The Bogen CS1EZ is a pre-assembled 1-watt single-tap ceiling speaker designed for use with 70V am. In both the am and fm circuits, I found strong readings at each tube (fm and am). Several weeks ago I found an old Bogen R-640-G tuner (ca 1955-1956). I’m a hobbyist at best but I enjoy digging into old components and, on rare occasion, I actually fix something. Finally, with the two new components installed, I took voltage readings – vdc relative to ground. My interests are largely centered on vintage audio gear: late 60’s through early 80’s. But that produced no difference: still strong am, no fm. (There is a two cap canister around the rectifier that is a replacement and seems to be working.) So I ordered and replaced both questionable parts. Also, visually, I could only identify one cap as an electrolytic, so I pulled and tested it and found it bad. I got hold of a Sam’s schematic and checked to see if the tubes were correct one tube, the fm mixer, was incorrect. The wood case is probably restorable, the dial plate glass and chrome surround are both very nice.Īfter cleanup, without any adjustment or component replacement, it had strong am output, but no fm (I do get a hum through the fm circuit at a high volume setting). I’m a hobbyist at best but I enjoy digging into old components and, on rare occasion, I actually fix something. My interests are largely centered on vintage audio gear: late 60’s through early 80’s.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |