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(Solved) help with a Namco System 256 PCB replacement

Tyson1911

Tyson1911

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Hello everyone, I have a problem with my Namco System 256 card, this console gives sound without problem but there is no image. when I open it I realize that L1 is short-circuited, someone will know with what I can replace that coil or if they will have the value of that coil and what type it is.

20201123_094736.jpg
 
Hello all - I seem to have this exact same problem - L1 and C135 are bad/burned.

I will check F3 - didn't notice that it had any issue.

@Tyson1911 Do you remember what the values of the parts were, and where you got them?

Matt
 
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In case someone else has these issues - I pulled these 2 components off of a regular namco 256 parts board and got the super 256 up and running.

C135 is marked with "C106" so 10 uF, 16v.
L1 is marked with "470" so 47 uH

Those are the right values I believe - I just transplanted them over and everything works great.

Matt
 
Ding ding ding.
Found the same issue on my PCB.
Just got to see what to replace them with?
 

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Tyson1911 said:
Well I found the fault. C135 was shorted.20201127_170807.jpg

replace faulty capacitor

20201127_170923.jpg

also proceeded to replace the components damaged by this short circuit

F3 is 2.3A I did not find 2.3A, and install 2A

20201127_171101.jpg

and the faulty coil was replaced

20201127_171127.jpg
Click to expand...
I am an idiot and have never understood how to order properly sized capacitors from Digikey. I tried to order these replacement parts but they were waaaaaaay too small. Can you guys give some advice on which size to get please, & thank you.
 
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mathewbeall said:
These are the values - you just have to get the right footprint:

C135 is marked with "C106" so 10 uF, 16v.
L1 is marked with "470" so 47 uH
Click to expand...
I am a little confused. When you only list the uH rating what voltage should I get? Or is this another type we're talking about?
 
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As I understand it - inductors (the L denoter) only have one value of measurement - Henries, or in the case of these small marts, microHenries.

Matt
 
mathewbeall said:
As I understand it - inductors (the L denoter) only have one value of measurement - Henries, or in the case of these small marts, microHenries.

Matt
Click to expand...
Thank you so much bro, I had to call Digikey and get some help with my order. Ordered the parts twice but they came so dam small.
 
Oh by the way here is a second board I bought from Yaton with same dam issue.
 

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