Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
News:
The forum software has been updated!
Home
Help
Login
Register
The Aussie Pinball Arcade
»
Aussie Pinball Forums
»
Technical Matters
»
Pinball Repairs / Problems & Assistance
»
capacitors that look like glass diodes
« previous
next »
Print
Pages: [
1
]
Go Down
Author
Topic: capacitors that look like glass diodes (Read 471 times)
0 Members and 1 Guest are viewing this topic.
studley67
Trade Count:
(
+7
)
Forum Posts:
adelaide hills
capacitors that look like glass diodes
«
on:
February 29, 2012, 09:09:55 PM »
was fault finding mildflames flash mpu.and found an open circuit diode.i thought.turns out is was c32 a 0.047 capacitor in an axial package.had printed on it 473 and thats all.it was glass,and looked like a small signal diode ie. a 1n914.so it was ok in the first place.WARNING to the novice like me.lol.
also found alink to sys3-6 schematics here
http://tuukan.fliput.net/wms_en.html
«
Last Edit: February 29, 2012, 09:14:21 PM by studley67
»
Logged
Life is too short to spend time with people who suck the happiness out of you
Homepin
Trade Count:
(
+15
)
Forum Posts:
Not a business - A Passion!
Re: capacitors that look like glass diodes
«
Reply #1
on:
February 29, 2012, 10:53:22 PM »
Yes, they were very common in most electronics around the time these machines were built.
The code 473 is assembled as follows:
4
+
7
+
3 x "0" (zeros)
makes = 47000
move the decimal place 6 to the left and you get
.047ufd
Logged
Replacement Pinball PCBs that remain faithful to the originals
studley67
Trade Count:
(
+7
)
Forum Posts:
adelaide hills
Re: capacitors that look like glass diodes
«
Reply #2
on:
February 29, 2012, 11:53:42 PM »
thanks mike,worked that out.
Logged
Life is too short to spend time with people who suck the happiness out of you
studley67
Trade Count:
(
+7
)
Forum Posts:
adelaide hills
Re: capacitors that look like glass diodes
«
Reply #3
on:
February 29, 2012, 11:58:06 PM »
have u got any?
Logged
Life is too short to spend time with people who suck the happiness out of you
ajlaird
Trade Count:
(
0
)
Forum Posts:
Greensborough, Melbourne
Go Ahead, Make My Day
Re: capacitors that look like glass diodes
«
Reply #4
on:
March 01, 2012, 01:35:24 AM »
Should be able to replace with equivalent rated ceramic, I would have thought.
Logged
Homepin
Trade Count:
(
+15
)
Forum Posts:
Not a business - A Passion!
Re: capacitors that look like glass diodes
«
Reply #5
on:
March 01, 2012, 06:22:22 AM »
completely NON ctitical in this application. Almost any small cap will work OK and generally with values between .01 and .1 will make no difference although .047 is a very common value so it will be easy to find in many different styles of cap.
I prefer the "MKT" type myself as they are regular in size and so they look neat on a finished board. Axial types like this are a bit harder to find these days. For the Bally MPU project I had to have a small run done in the capacitor factory of the common values used on the board as they were not available 'off the shelf'.
«
Last Edit: March 01, 2012, 06:25:02 AM by Homepin
»
Logged
Replacement Pinball PCBs that remain faithful to the originals
Print
Pages: [
1
]
Go Up
« previous
next »
The Aussie Pinball Arcade
»
Aussie Pinball Forums
»
Technical Matters
»
Pinball Repairs / Problems & Assistance
»
capacitors that look like glass diodes