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Old 8th July 2009, 06:14 AM   #231
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Quote:
How do you remove the previous heatsink? please outline. Thanks.
Removed the plastic clamps and heated the heatsink with hot air to +/- 70 degrees , then twisted it with my hand. use protective gloves of course. Don't heat to much as you don't want that the tp2050 ic's comes loose as well.
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Old 8th July 2009, 09:54 AM   #232
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Default Re: Input Cap replacement

Quote:
Originally posted by swkbkk
I have been scared off of destroying my board by my flimsy attempt to mod it. But a successful input cap replacement by whelibob has given me some courage to try myself finally.

But I have two "technical" problems at the moment.

How do I "remove" the small SMDs (C25, C17)? Any tips on doing some kind of precision surgical removal?

I got a pair of WIMA MKP10 (2.2uF, 250V) but they are a lot bigger than the size of C24, and C25 that they are going to replace.

What's the best way of putting the MKP10s to the board with minimum effort?
I used small pliers and a soldering iron to remove those small SMD's.

If you have a wide WIMA capacitor, i would just use some sort of extra wires to make the legs reach the hole.

Here are some poor pics of the modding:
http://i78.photobucket.com/albums/j1...i/DSC00188.jpg
http://i78.photobucket.com/albums/j1...i/DSC00189.jpg
http://i78.photobucket.com/albums/j1...i/DSC00191.jpg
http://i78.photobucket.com/albums/j1...i/DSC00194.jpg

The fan spins a bit too fast since its connected to 24Volts. Need to reconnect it with 12Volts so it is silent.
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Old 8th July 2009, 03:20 PM   #233
riktw is offline riktw  Netherlands
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if you connect the fan to the 5V its really silent
but i use an 12cm fan with 5V, dont know if a small fan cools enough at 5V
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Old 8th July 2009, 11:34 PM   #234
nrg2009 is offline nrg2009  United States
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Thanks for the photos whelibob. That makes it clearer, I think I'll be able to figure it out from that.
Also Rik, I'd like to see your setup as well, would you mind posting some photos? I'm also thinking of attaching a 12V fan to the 5V output to keep it quiet.
Could anyone post some detailed photos of the Zobel components? They seem to be missing from the latest models.

Also, is there any benefit from a cap on the input rail?

Keep up the great work, it's a fun project to work on.
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Old 9th July 2009, 01:01 AM   #235
nrg2009 is offline nrg2009  United States
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Gents,

I'm a bit of noob when it comes to audio DIY. Which caps are considered to be appropriate for this mod? I found a couple candidates:

mentioned before in this thread are Wima:
- Wima MKS, MKM or MKP?

-Jantzen cap:
http://www.parts-express.com/pe/show...number=027-266

-Auricap:
http://www.parts-express.com/pe/show...number=027-674

-Xicon:
http://www.parts-express.com/pe/show...umber=020-1284

Thanks!
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Old 9th July 2009, 03:07 AM   #236
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Thank you whelibob for sharing
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Old 9th July 2009, 11:57 AM   #237
Piek is offline Piek  Europe
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Did anyone try to replace the smd LED's with larger types that can be installed at the enclosure for indication of status?

-Micha
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Old 9th July 2009, 06:09 PM   #238
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Quote:
Originally posted by riktw
if you connect the fan to the 5V its really silent
but i use an 12cm fan with 5V, dont know if a small fan cools enough at 5V
I probably did something wrong when i connected my fan to 5V, because the amp muted Can you show where exactly you got the 5volts?

Ah im really stupid. I should ground it somewhere else then into the mute
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Old 9th July 2009, 06:57 PM   #239
Nisbeth is offline Nisbeth  Denmark
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Quote:
Originally posted by Piek
Did anyone try to replace the smd LED's with larger types that can be installed at the enclosure for indication of status?

-Micha
No, but it shouldn't be a problem if you remove the SMD-LED and wire up a new LED in its place.


/U.
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Old 10th July 2009, 08:12 AM   #240
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Received my replacement today, not so bad from Sure Electronics after all.
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