UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Motorola 251 8 Track Motor Resistor Burn Out!

Magical · 20th Nov 2020, 1:33 am

Thx for your help. You're right I meant uF not mF...doh!

I'll do what you suggest. It is a car unit. I'm beginning to suspect something breaking down inside the motor as the external circuitry to it is very simple...so simple that me as a mechanical engineer can understand it. I have another motor that was duff so I took it apart. There are a couple of capacitors, 3.3uF and resistors on the armature. It's rather strange how it occcurs. The motor spins happily, maybe even up to an hour then wham...full melt down!

20th Nov 2020, 1:33 am	#3
Magical Triode Join Date: Jun 2020 Location: Stoke-on-Trent, Staffordshire, UK. Posts: 33	Re: Motorola 251 8 Track Motor Resistor Burn Out! Thx for your help. You're right I meant uF not mF...doh! I'll do what you suggest. It is a car unit. I'm beginning to suspect something breaking down inside the motor as the external circuitry to it is very simple...so simple that me as a mechanical engineer can understand it. I have another motor that was duff so I took it apart. There are a couple of capacitors, 3.3uF and resistors on the armature. It's rather strange how it occcurs. The motor spins happily, maybe even up to an hour then wham...full melt down!