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 Post subject: B&K 607/667 schematics/service manual/calibration/parts list
PostPosted: Dec Wed 27, 2017 10:46 pm 
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Joined: Dec Tue 12, 2017 10:43 pm
Posts: 13
Hello,

I've recently found a B&K 607 tube tester and I'm having difficulty finding anything other than the user manual online.

I found a link on this site that linked to a dead photobucket page, but that's all.

If anyone would PM me (or link in this post) any of the following I'd greatly appreciate it!

B&K 607 schematics, service manual, calibration procedure, parts list.


Thanks again for all of your help!

Wes


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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Dec Thu 28, 2017 2:36 am 
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Location: Columbus Ohio
here is BAMA's listing for B&K:
http://bama.edebris.com/manuals/b&k/

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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Dec Thu 28, 2017 5:54 pm 
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Joined: Dec Tue 12, 2017 10:43 pm
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Quote:
here is BAMA's listing for B&K:
http://bama.edebris.com/manuals/b&k/


Thanks! I had been there checking, and I see that the 667 info is there - the calibration is probably the same, but I'm having trouble figuring out the difference between the 607 and the 667.

One post I read said that the 667 was the 607 in a different case... (true? false?)

I have found a schematic and calibration for the 667, but still no parts list, and the schematic is a little dodgy.


Wes


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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Dec Thu 28, 2017 7:10 pm 
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They look identical control and socket count wise. Didn't look to see if all sockets match each other.
I imagine the 607/667 is the faceplate color change

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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Dec Thu 28, 2017 7:16 pm 
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Joined: Dec Tue 12, 2017 10:43 pm
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glue_ru wrote:
They look identical control and socket count wise. Didn't look to see if all sockets match each other.
I imagine the 607/667 is the faceplate color change


That would be good! Then all I'd need would be a parts list, and a decent schematic!


Wes


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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Dec Sat 30, 2017 12:34 am 
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Joined: Nov Mon 09, 2015 5:21 pm
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There is also Bob Putnak's TubeSound website that you can take a look at.
https://tubesound.com/bk-607-667-tube-tester/
I own the 607 model; calibration is a simple process.


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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Dec Sat 30, 2017 3:04 am 
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Joined: Dec Tue 12, 2017 10:43 pm
Posts: 13
emeraldcity_glass wrote:
There is also Bob Putnak's TubeSound website that you can take a look at.
https://tubesound.com/bk-607-667-tube-tester/
I own the 607 model; calibration is a simple process.


Excellent! I thought I was there already, but maybe I didn't scroll down enough. Good info here.

Anyone happen to have a parts list? I can work with the schematic I have, but some of the values aren't clear.

I'll see if I can tack together a parts list and post it here, then anyone with access to a Schematic can let me know if it's accurate..


Thanks!

Wes


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 Post subject: Re: B&K 607/667 schematics/service manual/calibration/parts
PostPosted: Jan Mon 01, 2018 5:14 pm 
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Joined: Dec Tue 12, 2017 10:43 pm
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Happy New Year!! 2018!

Ok, here goes on the working, unverified cap and resistor list, and the calibration of the 667 (and hopefully the same for the 607):

B&K 607 cap and resistor parts list (unverified until this is removed)
This is exactly how they are labeled on the schematic I have.

Caps:
C1 - .047
C2 - .1
C3 - .1
C4 - 160 40V
C5 - 160 25V
C6 - .01
C7 - .047

Resistors:
R1 - 2 MEG (Shorts Adjust)
R2 - 8.2 M
R3 - 56 K
R4 - 10 M
R5 - 5.6M
R6 - 620 Ohm +/- 5%
R7 - 22 K
R8 - 8.2 K
R9 - 10 K
R10 - 680 Ohm
R11 - 220 Ohm
R12 - 220 Ohm
R13 - 160 Ohm 4W
R14 - 140 Ohm 12W
R15 - 4.7 K
R16 - 10 K
R17 - 3.3 K (Sensitivity Adjust)
R18 - 470 Ohm
R19 - 3.9 M (?)
R20 - 8.2 M

If the calibration is the same as the 667, then here is the info directly from the 667 manual:

-----------------------------------------------------------
CALIBRATION INSTRUCTIONS

The sensitivity of the leakage test circuit in the Model 667 is adjusted at the factory so that a leakage of 100 megohms just reads in the GRID EMISSION-REJECT area of the meter scale.

Should this sensitivity control require readjustment, proceed in the fol­lowing manner:
l.) Remove main panel from case, after removing screws from panel and center of bottom of carrying case. (Between molded feet)
2.) Place a 100 megohm resistor in tube socket #6 between pin 1 and 9.
3.) Rotate SELECTOR switch to position #1.
4.) Depress the LEAKAGE pushbutton and observe the meter. Adjust the white trim pot on the P.C. board adjacent to the meter until the meter pointer reads at the division of the GREEN and the GRID EMISSION- REJECT sections of the scale.

The shorts test circuit is factory adjusted to a sensitivity of one megohm.
Should this circuit require readjusting, proceed in the following manner.
1.) Remove main panel from case as above.
2.) Place a one megohm resistor in tube socket #6 between pin 1 and 9.
3.) Rotate the SELECTOR switch to position #1.
4.) While observing the SHORTS light, adjust the blue trimmer po­ tentiometer on the P.C. board until the SHORTS light just barely glows.
5.) Reassemble tester.
-----------------------------------------------------------


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