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 Post subject: Re: Capacitor question
PostPosted: Jan Sun 13, 2019 11:06 pm 
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What schematic are you using??---The one in Riders does not have R-numbers going that high.
Regardless, at least one of your connections in incorrect....I will post some notes later.

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 Post subject: Re: Capacitor question
PostPosted: Jan Sun 13, 2019 11:35 pm 
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pixellany wrote:
What schematic are you using??---The one in Riders does not have R-numbers going that high.
Regardless, at least one of your connections in incorrect....I will post some notes later.



I'm using the "Zenith service manual", they lists the resistors as: R2 = 22K, R3 = 2200, R4 = 1M etc. The capacitor as C1, C2, etc. it's for the location of the resistor or capacitor on the schematics.

Sometimes they are hard as hell to locate on the schematics.

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 Post subject: Re: Capacitor question
PostPosted: Jan Sun 13, 2019 11:42 pm 
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See if this helps:
Attachment:
G500_caps.jpg
G500_caps.jpg [ 58.36 KiB | Viewed 281 times ]

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 Post subject: Re: Capacitor question
PostPosted: Jan Mon 14, 2019 12:51 am 
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pixellany wrote:
See if this helps:
Attachment:
G500_caps.jpg



That's great, it's really clear, my schematics doesn't have that detailed capacitor! Now were going places. :D :D :D :D :D


I must have a retard for schematics. :shock:

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 Post subject: Re: Capacitor question
PostPosted: Jan Mon 14, 2019 1:05 am 
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Just spotted an error: the 60uF cap goes to the junction of THREE resistors

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 Post subject: Re: Capacitor question
PostPosted: Jan Mon 14, 2019 3:48 pm 
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Thanks a lot for your help. :D

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 Post subject: Re: Capacitor question
PostPosted: Feb Tue 05, 2019 5:33 am 
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:o
Hello,

Another question on the G500.....

Attached to the 1S5 #5 is a ceramic capacitor, the other lead goes to the capacitor can negative.

On the rebuilding chassis I can see its where it's been cut, and miss before I got it.

On my G500 that I'm using as a reference I see a capacitor, green, really small, ceramic, with a:

:arrow: White yellow violet black black

OR

:arrow: Black black violet yellow white

Can someone help me identify the correct capacitor this uses????

:?: :?: :?:

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 Post subject: Re: Capacitor question
PostPosted: Feb Tue 05, 2019 12:34 pm 
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The schematic shows 3 components on pin 5 of the 1S5: 1Mohm resistor, 0.01uF capacitor going to pin 4 of the 3V4, and a 50pF capacitor going to B- (which is where the capacitor can goes.

The 50 pF cap can be ceramic or mica, and the value is not critical.

PS: my reading of the color bands you listed:
white : 1000volt (rating)
yellow, violet, black: 47pF
black: 20% tolerance

https://www.electronics-tutorials.ws/ca ... cap_5.html

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 Post subject: Re: Capacitor question
PostPosted: Feb Tue 05, 2019 4:09 pm 
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pixellany wrote:
The schematic shows 3 components on pin 5 of the 1S5: 1Mohm resistor, 0.01uF capacitor going to pin 4 of the 3V4, and a 50pF capacitor going to B- (which is where the capacitor can goes.

The 50 pF cap can be ceramic or mica, and the value is not critical.

PS: my reading of the color bands you listed:
white : 1000volt (rating)
yellow, violet, black: 47pF
black: 20% tolerance

https://www.electronics-tutorials.ws/ca ... cap_5.html


:D

Thanks,
I saw the 50pf on the schematics, but was confused with the 47pf capacitor in the "example" chassis I'm using as my reference. The people here are so helpful, it's really great.

Again, thanks for your time.

:mrgreen: David

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 Post subject: Re: Capacitor question
PostPosted: Feb Tue 05, 2019 4:54 pm 
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In that application, 50 and 47 are interchangeable.

What you are seeing is the modern "standard values" used for things like resistors and capacitors:
https://en.wikipedia.org/wiki/E_series_ ... ed_numbers

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 Post subject: Re: Capacitor question
PostPosted: Feb Tue 05, 2019 8:50 pm 
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pixellany wrote:
In that application, 50 and 47 are interchangeable.

What you are seeing is the modern "standard values" used for things like resistors and capacitors:
https://en.wikipedia.org/wiki/E_series_ ... ed_numbers



Thanks a lot that cleats up one thing, I'm not totally crazy. :oops:

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 Post subject: Re: Capacitor question
PostPosted: Feb Sat 09, 2019 6:14 am 
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https://sites.google.com/site/5g40chassiscomplete/

I've got some photos of the chassis. :D

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 Post subject: Re: Capacitor question
PostPosted: Feb Sat 09, 2019 11:06 pm 
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Great job Mark. Another happy customer.


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 Post subject: Re: Capacitor question
PostPosted: Feb Sun 10, 2019 7:31 am 
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look carefully at the area around the base of each lug... the brown phenolic wafer is cut out in the shape of each key listed on the capacitor. THis trick was widely used by most of the can capacitor makers.
Mark Oppat


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 Post subject: Re: Capacitor question
PostPosted: Feb Sun 10, 2019 8:00 am 
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oldradioparts wrote:
look carefully at the area around the base of each lug... the brown phenolic wafer is cut out in the shape of each key listed on the capacitor. THis trick was widely used by most of the can capacitor makers.
Mark Oppat


None there I've looked. After much deliberation, some help, and reading the schematics, I determined the correct wiring and it worked out fine.

https://sites.google.com/site/5g40chassiscomplete/

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