Pulsar wont wok

An area for people to discuss Scope related problems, issues, etc.

Moderators: valis, garyb

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astroman
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Re: Pulsar wont wok

Post by astroman »

I'd stay away from recap, but just replace the fallen off capacitor at the blue mark. ;)
hewlet
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Joined: Thu Jul 08, 2010 11:38 am

Re: Pulsar wont wok

Post by hewlet »

My cards works fine, but i want to use them many more years ;)
Capasitators on this boards are very old, and sooner or later they will starting to fail.
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asktoby
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Re: Pulsar wont wok

Post by asktoby »

hewlet wrote: Thu Oct 11, 2018 11:49 am I can upload a video of how i recap the board next week :)
Would love to see that video if you have it?
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asktoby
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Re: Pulsar wont wok

Post by asktoby »

Never mind, I made my own : )

"Sonic Core Creamware Pulsar II capacitor replacement"
https://youtu.be/5dcZLVWpHcw
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garyb
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Re: Pulsar wont wok

Post by garyb »

well done!
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sandrob
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Re: Pulsar wont wok

Post by sandrob »

Just to report. The card has been repaired. First, all the capacitors were changed, but that did not solve the problem. Now I finally changed the stabilizer and the Pulsar is now like new.
Thank you all! :)
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asktoby
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Re: Pulsar wont wok

Post by asktoby »

What's the stabilizer?
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sandrob
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Re: Pulsar wont wok

Post by sandrob »

Sorry if I named wrong. That's the part with the 3 legs that says it:
AS2815AU
3.30012
ALPHA
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astroman
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Re: Pulsar wont wok

Post by astroman »

It‘s a voltage regulator with 1.5A capability. The AS2830 is a 3A version, might be more heat resistant.
(the part is only cooled by the solder pad around it... and Croatia gets pretty warm in summer)
Congrats for the solution :)
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