ok I set my new record for a cap kit, k4900, but....

tron guy

Super Moderator
Staff member

Donor 12 years: 2011, 2015-2025
Joined
Jun 26, 2007
Messages
23,145
Reaction score
2,593
Location
Eureka, California
ok I set my new record for a cap kit, k4900, but....

I notice position C366 has a cap in it, but is not on Bob robert's list, nor
does it come with a cap to replace it.
Is this position just not an issue?

oh yeah, 1 hour 20 minutes. lol, I think my previous best was 2 1/2 hours, so I killed it.

maybe I will go do one more while I am on fire.
 
I notice position C366 has a cap in it, but is not on Bob robert's list, nor
does it come with a cap to replace it.
Is this position just not an issue?

oh yeah, 1 hour 20 minutes. lol, I think my previous best was 2 1/2 hours, so I killed it.

maybe I will go do one more while I am on fire.

80 minutes to do a K4900? I know I do a lot more monitor work, but it only takes me 15-20 minutes to cap a 4900. There are only 16 caps, after all.

As for the C366, some 4900's have a non-electrolytic cap in there instead, so it's not typically included with the kit, just like the 1uf50v cap that bridges that diode. If you have one, go ahead an replace it. If not, you'll probably be okay if it works fine without it being replaced...
 
*sound of Bubble Bursting*

Damn Mod, kill joy.:D

naw, when I broke 40 for the first time playing 9 holes of golf I was stoked.
Obviously, I am telling this to guys who shot under par at the time.

Now I am the pro, and I get to hear other guys stories of breaking 90 for 18 and so on.

It may have been closer to an hour, but I don't like to exaggerate.

thanks guys, always the insight I need.

late
 
ok, went and threw the chassis on my yie ar kung fu, and oh crap it's all red and shit.

so I start messing with the neck board, and it looks good.

that one cap didn'tmatter.
thanks again guys.
 
@tron guy sorry for the old post bump...

I'm working on my first K4900 cap kit.. where the heck is C366?

Can't find it anywhere? Lol
 
It probably runs exactly with d306. Uses the same holes. Iirc, negative points up, or away from the pots.
 
It probably runs exactly with d306. Uses the same holes. Iirc, negative points up, or away from the pots.
translation: minus side of cap aligns with the cathode of the diode. lol

I add solder to the diode/cap and aiming for the cap's legs, not the diode's, you can clear the holes out with relative ease. I use like a roll of tape and dump all the caps in the middle, pulling out the biggest caps and installing those first. then you progressively work to the smaller more pain in the ass ones later. I generally don't go based off the cap locations on the sheet like the way you think you would, I match old cap for new cap, and just verify the voltage values against the sheet. I was thus never aware it was called C366.
 
@tron guy & @mecha

Is this the one? So do I remove that small orange diode and replace with the 22uf 50V cap in the kit?
 

Attachments

  • 20210726_191308.jpg
    20210726_191308.jpg
    1.7 MB · Views: 35
  • 20210726_191342.jpg
    20210726_191342.jpg
    1.5 MB · Views: 32
@security0001 any help is appreciated.

The rest of your kit is installed. Just want to verify this cap install.

Or maybe just leave the original diode in?
 
I feel like I see a cap instslled kn d306 in the back of your pic, and you did some 22uf instsll on d307. (Never seen that before)
 
I feel like I see a cap instslled kn d306 in the back of your pic, and you did some 22uf instsll on d307. (Never seen that before)
OP yes check this and all the remaining work prior to power up. your other question with D306 yes the diode stays.
 
You guys are frigging me out. lol

@tron guy Look at the kit instructions I posted. It says to put a 1 uf 50V cap on D306 diode?

And C366 & D307 are the same location no?

What am I missing?

I feel like I see a cap instslled kn d306 in the back of your pic, and you did some 22uf instsll on d307. (Never seen that before)

OP yes check this and all the remaining work prior to power up. your other question with D306 yes the diode stays.
 
Here's a good pic showing the original caps... check out D306
 

Attachments

  • 20210726_145359.jpg
    20210726_145359.jpg
    1.7 MB · Views: 21
Reading the kit instructions again I see it says if C366 didn't come with a cap then dont install the one. Think I'll just remove it for now.
 
Reading the kit instructions again I see it says if C366 didn't come with a cap then dont install the one. Think I'll just remove it for now.
yes correct. never install a cap where one wasn't originally installed so on your version you should remove it.
 
Well successful cap kit done.

For reference I ended up using 4.7uf at C311 as well incase anyone wants to know.

Thank again to @security0001 and others in this thread for the help.
 

Attachments

  • 20210727_135738.jpg
    20210727_135738.jpg
    1.9 MB · Views: 9
  • 20210727_160531.jpg
    20210727_160531.jpg
    1.9 MB · Views: 9
Back
Top Bottom