Efka Variostop PCB details required

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MattressMan

Joined Jan 20, 2017
1
I have a faulty Efka Variostop motor off an industrial sewing machine. The motor is running ok but the clutch/brake control board is faulty. The board number is 4E30AY4 which is equivalent of Juki no. EFK3107109 , any info would be greatly appreciated, thanks
 

Jpscou

Joined Mar 11, 2024
2
I have a faulty Efka Variostop motor off an industrial sewing machine. The motor is running ok but the clutch/brake control board is faulty. The board number is 4E30AY4 which is equivalent of Juki no. EFK3107109 , any info would be greatly appreciated, thanks
I want to repkace this defective transistor but i don’t find any information nor replacement for this type (5-1147 RCA 410 or RCA 414). I suppose these are darlington NPN transistors but i’m not sure.
can someone help me?
 

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Jpscou

Joined Mar 11, 2024
2
It’s ok. I’ve found the type by measuring another transistor. It’s a NPN darlington transistor (hFE =30) 1=B, 2=C,3=E

The Variostop functions now again.
 
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