Hi, Ron or Rob, Are You There. Seeburg kd 200

Hi, Ron, or Rob, Got myself a KD 200. First time on one of these bit of a mish mash of pcb's and electro mechanical. Was scanning and selecting after getting it going, apart from duff cartridge, anyway switched it on the other day, and no longer scans. Checked the usual on mech . removed the motor, and the motor will start when I press the scan switch. but only if I give it a helping hand, and I can stop it very easily just by looking at it, tried another motor and capacitor and just the same. voltage at wires to motor is around 115v until I press the scan switch, then the voltage at the blue and the white or yellow whatever it used to be goes up to 240v. would I be right in thinking the problem lies at the TEU1. Or the transformer for the mech.The 5U4 -GB valve illuminates as if the mech was scanning. Cheers Harry.

Hi Harry,
What is the model number of that phonograph ? As far as I know, Seeburg used only "117 volt" motors, in all units made from at least 1949 to the end of the 45 rpm run--Almost sounds as if you have a motor cap that is not being "added" by the cam switch ?? BUT the 240 volt reading really worries/confuses me -- the scan switch should not affect the voltage to the motor--it mearly triggers the scan add coil in the back door, which connects the motor run (117v) points ? Ron Rich

Hi, Ron, The model number Is a KD 200,The 240v confuses me to. The scan switch does activate the scan add coil, but it stays activated because the mech does not scan. I de energise it by pressing the mech stop contacts on the side of the service switch. I also get 110v at the reversing switch contacts. But when the service switch is activated to scan the mech it goes up to 240v on contacts J-K and G-H. Checked the 110v transformer in the box and it's fine, So that's why I think there is something funny, well not so funny. going on with the TEU-1. And I thought all I needed was a fresh cartridge, Cheers, Harry.

Harry, I don't like to bear bad news but, in the three cases I've had that sluggish motor symptom, it has been a bad motor winding.
Last December someone asked for measurements of the two windings on another forum and Ron responded:
"G/Y? 257 and R/B 99 ohms--this is on an unknown (good/bad) KCI-42 not KCI42 A-1 motor.
?Ron Rich"

I confirmed these within a few ohms w/known good motor. Measure the motor cap, or just sub a 1mfd NP across it for test.

I have no idea as to what is going-on with that wacky voltage reading. However, the B+ tran in the amp section is on the same line and if the entire machine is plugged into a dropping tran, I doubt you are actually seeing a real 240VAC there as a lot of other things would be popping.

Rob

Hi, Rob And Ron, Well I was going to call it a day, and go and watch telly in bed ,then decided That for some reason which I would like to have more of, but unfortunately the old cogs in the brain seem to be slipping more often lately. decided that I would try another motor run cap. And for some reason hey presto back to scanning, don't know what was going on with the 240v reading but I did check it several times with the same result. God only knows what was going on inside the other motor run cap. Now I am getting around 45v when scanning. Not selecting now so suspect the trip solenoid has given up the ghost will check that tomorrow. cheers Harry.

Hi Harry,
I don't understand your "readings", at all--are you checking at the reversing switch commons ??
And as far as the "no trip"problem--that "should not" be related, in any way to a bad motor, or motor cap ??
Ron Rich

Hi, Ron I am getting the readings from the four motor wires which are connected together with a block connector at the moment. I get 24v when mech is stationary and double that when scanning. Harry.

Hi Harry,
That's not where to read motor voltage, unless you know exactly which "side" ( direction, or, one, of the two) motors, is powered.
The best places to check are the two center motor contacts, on the reversing switch--usually larger wires-but not always !! See schematic !! Ron Rich

Hi, Ron, Yep I know the motor contacts. getting exactly the same readings from them, 24v stationary and double that when scanning. Harry

Hi Harry,
Somethin's not rite !! Are you reading with you probes --one on each contact, or with one on the chassis (earth) ?
Ron Rich

Hi, Ron I am reading with one on the chassis earth. Harry

Hi Harry,
That's what I was guessing--can't read motor power that way--gotta-be on both legs of the supply -- don't know the significance, if any, of your readings ?? Ron Rich

Hi, Ron, When reading between the two contacts I get virtually nothing. Harry.

Hi Harry,
If the motor is not running, that's exactly what you should see--If the motor is running, you are not reading the "motor supply " !! CAUTION--that's high enough voltage to do some damage to you !! Ron Rich

Hi Ron, I have had quite a few zaps off mech contacts in the past, Dammed shaking hands won't keep still, but luckily my body seems to have a high tolerance to electricity. Don't know how I would react to a lightening strike though. anyway it's working again so I will leave well alone. Thanks for your advice. Harry.