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Cap block 6287-DU used in 116B chassis question
#1

The schematic list this as a .3/mfd block. I know it's really two .15/mfd. Now, it also list a 200/ohm wire resistor as part of the block. I didn't see anything inside it. This block had over-heated at one point, and all the tar was melted out. I'm also a little confused to which block lugs are used for the caps, vs the resistor. Can someone clear this up for me. Here's the parts listing.
http://www.philcorepairbench.com/bblokcap.htm

-Brian
If you collect or are interested in antique telephones, please visit Classic Rotary Phones
http://www.classicrotaryphones.com/forum/index.php
#2

My 650B used the same part. The bakelite block in mine looked identical to the universal type 6287-ODU. It uses two .15uf caps, one between terminals 1 and 2 and the other between terminals 1 and 3. IIRC, there was even a jumper on the outside between terminals 2 and 3.

Ed
#3

For clarity sake, I'll number the lugs 1 2 & 3 from left to right, starting at the hold down bolt end. So, on mine there is also a jumper between 2 & 3. Just wondering if a resistor internally figures into any of this. I seem to remember talk of a resistor in one thread some time back.

-Brian
If you collect or are interested in antique telephones, please visit Classic Rotary Phones
http://www.classicrotaryphones.com/forum/index.php
#4

There was no resistor in mine. And yes, you have the numbering correct. The jumper is correct between terminals 2 and 3 on the outside. Icon_smile

Ed
#5

Brian

I think you are confusing part 6287-D with 6287-DU in the listings on Chuck's site.

The two are different parts. 6287-D is not used in the 116B as it an older type, not the "universal" type with six lugs which was adopted at the beginning of the 1936 model year.

6287-DU, listed as 6287-ODU on Chuck's site (same specs, just different wax used to seal it), does indeed contain two 0.15 uF caps, connected externally in parallel to make 0.3 uF.

(Edit: Also, the 6287-DU/ODU does not contain a resistor.)

Ed has given you the correct info, also. Icon_smile

--
Ron Ramirez
Ferdinand IN
#6

Yes, thank you gents. That's what I did. The listing confused me.

-Brian
If you collect or are interested in antique telephones, please visit Classic Rotary Phones
http://www.classicrotaryphones.com/forum/index.php




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