Telefunken ELA M 251 Clone Tube Microphone Build Thread (D-Ela M 251E)

[JeffKall]

Hey All,
Power Supply for the D251. No B+. All Electrolytics and diodes are pointed in the correct direction. Can you help me troubleshoot?
Thanks to the forum.
Jeff
EDIT#2
User error. Voltage was sinking cuz the PS was OFF! All good now. Sorry to bother

Hey, @geekmacdaddy …
I was relieved to see that I am not the only Jeff who occasionally misses that ONE significant step !

 

[geekmacdaddy]

Hey, @geekmacdaddy …
I was relieved to see that I am not the only Jeff who occasionally misses that ONE significant step !

Happens ALL the time!

 

[Jim50hertz]

My D251s with Moby transformers. have reversed polarity. Anyone any idea why this might be and where is the best place in the circuit to fix this? At the transformer secondaries?

 

[Khron]

At the transformer secondaries?

Why not?

 

[Delta Sigma]

My D251s with Moby transformers. have reversed polarity. Anyone any idea why this might be and where is the best place in the circuit to fix this? At the transformer secondaries?

or power supply? what's the easiest to change?

 

[Jim50hertz]

Thanks fellas, so it’s non critical where the fix takes place.

 

[Georgy k]

Is there anybody on the forum that has built a good elam 251 willing to sell?. I have Stam 87 and am looking to build a 251 and a 67, but it can save me time to buy from builders on this forum.