Hi.
Great, thanks for the info!
Next project is to try to fix my semi-broken Korg microKorg keyboard! woo!...
ankan
Member
Last Activity: 10-02-2014, 11:52 AM
Joined: 04-27-2014
Location: Prague
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
Hi.
Great, thanks for the info!
Next project is to try to fix my semi-broken Korg microKorg keyboard! woo!... -
Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
So it took me a while to go and get the components to try to fix the psu.
But now it's up and running!
And I thought i'd post my solution here if anyone else has the same problem
and ask a few questions as well
What I ended up doing was replacing the 3 domed 25v 220uF capacitors with new ones.
I didn't find the ones I got recommended, so I bought the only ones my local place had.
[URL="http://www.ges.cz/cz/rad-220-25-ht-rm3-5-lxz-GES05413790.html"]http://www.ges.cz/cz/rad-220-25-ht-rm3-5-lxz-GES05413790.html[/URL]...Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
I've managed to find a electronics store in another city that sells the AOP605 fets btw so I will order it from there and get the caps and fuse locally.Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
If it's to any help, the caps says:
KF 105*c
P638
VENT
----
CapXon
220uf 25v
Maybe it's a low quality cap/bad batch?...Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
Yes, it got some "combo-mode" with diode-test and a speaker symbol
(I guess it's just indicating that it makes noise when it connects?)...Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
Sorry for a very slow answer, been a crazy busy week.
Pin 9 and 10 has +5v on them (when powered) so it seems ok. And the Fuse is ok as well....Last edited by ankan; 05-05-2014, 04:20 AM.Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
Hey, haha, you're pro enough for me
I will plug it in tomorrow and check it, I checked F102 now and it seems to be ok, but I will check the voltage tomorrow. Thanks a bunch!...Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
It actually seems to make perfect sense, those are the 3 that are domed (see my post from a few minutes ago). So you think there might be a chance that the mosfet is still alive? Even with a almost 0 ohm resistance on the chip with the burns around it (IC201)?
I'm completely fresh when it comes to buying components like these, but I got a tip to buy panasonic FR caps from stj, is there some fuse that is preferable as well? (even though one would think that a fuse should be pretty straight forward)...Last edited by ankan; 04-27-2014, 04:48 PM.Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
The C200 And CE 101 is indeed domed (as well as ce109)
You point of metering things in line made sense, so I also desoldered the mosfets and checked them, the IC201 (the one with the burns around it) Still tests the same. But the other one (IC202) gave me some difference.
IC201 AOP605 (results with 200Ohm, also tested 200k without success)
S1-G1 2 Ohm
S1-D1 0,5 Ohm
G1-D1 2 Ohm
S2-G2 ---
S2-D2 ---
D2-G2 ---
IC202 AOP605 (200k)...Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
Hi, thanks for a very fast reply
Yes, 20 bucks to get it working again is a bargain, I just wanted to make sure I order all the parts I need (hopefully) and also get some more knowledge of what's the cause, and whats the cure...
Leave a comment:
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Re: Bad DAC-19M00B PSU, would appreciate some pro-tips
Oh, I forgot to mention that the manual is also attached in the post.Leave a comment:
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Bad DAC-19M00B PSU, would appreciate some pro-tips
Hi BadCaps Forum!
I've gotten interested in learning electronics lately and a few weeks ago I got 2 broken LCD screen that I thought would be good to start to troubleshoot/try to fix.
Before I get started I want to say that I've read all the threads I see when I search for DAC-19M008 here on Badcaps.
There was a bunch of useful information there, and [B]I have come to the conclusion that most likely one of the AOP605 mosfets is fried[/B],
but since I can't seem to find any replacement parts where I live, I wanted to double check so that it's as I suspect... -
Re: New Members - please post your introductions here
Hi! My name Is Ankan and I'm new here, this seems to be a pretty awesome site for rookies (like myself) to dig a bit deeper in electronics. I look forward to share your expertise.Leave a comment:
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