Kenwood KR-5600 Recap Project - Where's Waldo?

[tusntuk2]

Thank goodness for this forum! I'm getting together a parts list for a KR-5600, even bought the manual, which holds info for the KR-4600 too. As I check through the cap list for the audio board (X09-1140-10) I can't find Cm 39 or Cm 40 in the schematic. I've checked the alternate s/m (4600) for them too, but it's like, WHERE'S WALDO?! Can anyone help me solve this little mystery? Thank you in advance! I'll be posting more about this project. I have two of these to do, maybe I'll even create a BOM list (with help) for the library, so stay tuned.

 

[hopjohn]

Discrepancies are fairly commonplace and the service manual should only be given as much credence as it deserves. Did you perform a visual check of the unit itself? There is where you create a BOM from.

 

[tusntuk2]

Thanks, hopjohn, I am currently working on that, just wondered if someone already encountered the problem. I might be a bit anal with details, but maybe in this work that's not a bad thing? Like, I'm still trying to figure out the oxymoron of "non-polar electrolytic" !

 

[hopjohn]

If the caps appear on the boards, but not in the schematic then they are likely just additions / improvements made during the 5600's production run.

Like, I'm still trying to figure out the oxymoron of "non-polar electrolytic" !

I hear ya. I'm still trying to figure out why hemorrhoids aren't called asteroids.

 

[tusntuk2]

That's funny hopjohn! Well, I did find the elusive caps Cm39 and Cm40, tied together over by Dm7, a Zener on the -B rail. Cm39 straddles the diode. Then I found Ck14, a 100uf 25v 'lytic straddling the zener Dk5 in the power supply - and wouldn't ya know it is NOT on the parts list, just as foretold. Once again, thanks for the advice, Gentlemen! If I ever get the recap list together it will be worth posting here. Next I need to learn how to do a cut + paste BOM for Mouser. Any easy format for that?