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

46-480 Oscillation
#1

Hello. Well I believe I blew it with my 46-480. I'm new to this and made a beginners mistake. When I replaced a bunch of wiring in the chassis I didn't pay attention to original wire lengths. Just gauge and composition, (stranded/solid). I also replaced the original electrolytics with new ones and mounted those inside the chassis and wired according to location and tried to keep things neat. Now I have a terrible oscillation problem. The whole radio vibrates. Well not that bad but it is bad. No humming from the speaker though. I just bought a freq. generator and a counter for performing my own alignments and now I would like to purchase an o-scope which will be very handy for isolating this oscillation problem and making necessary repairs. Can you please recommend an oscilloscope that would best work with these old radios. I see alot of them on e-bay but don't really know what I need as far as MHz. There are 400MHz scopes and 50MHz scopes. A recommendation would be great. Thanks much!




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
462ron
Here is an online transistor substitution site… Ron462ron — 08:44 AM
1930s Stewart-Warner Tombstone Radio need help identifying model number
One way to repair a broken wire on a coil is to take a copper strand out of some 18 gauge electrical cord, make a &quo...captainclock1988 — 12:55 AM
B&K 1077B no video
Hello Tim, I once had a Jcpenny 13inch tv /monitor built by NEC come into my repairshop it would start acting up at tim...radiorich — 10:59 PM
Restoring Philco 96
Mike; The last time I took a potted condenser can apart, and it was maybe 1/4 the size of the one in the model 96, I ...Arran — 10:56 PM
Compatible crts
Bob Andersen — 08:58 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
One way to repair a broken wire on a coil is to take a copper strand out of some 18 gauge electrical cord, make a "...Arran — 08:41 PM
Restoring Philco 96
Have just aligned it. Surprisingly, it was not that much off at all. Barely. Aligning TRF sets is pure pleasue, as ther...morzh — 07:52 PM
6TPZ and 5TPO Radio Help
1 - 0v - correct 2 - 0v - correct 3 - 0v - --------------------- both 3 and 4 should be the same. Check L2 for being ope...morzh — 05:15 PM
B&K 1077B no video
I'm going to get back into it tonight. but I disconnected the 2 main resistors off this supply going to different parts ...TV MAN — 04:04 PM
6TPZ and 5TPO Radio Help
Sorry. The test points are as follows: 1 - 0v 2 - 0v 3 - 0v 4 - 12v 5 - 0v 6 - 11.9v 7 - 12v 8 - 12v 9 - 12v...R3Sons — 02:09 PM

[-]
Who's Online
There are currently 2772 online users. [Complete List]
» 2 Member(s) | 2770 Guest(s)
AvatarAvatar

>