Re: Logitech Z-5500 recap and speaker connection mod.
Mosfets... what ic do you want to know?
A few small ics say this
r4580I
75khov5[SIZE=1]g4[/SIZE]
Mosfets are TDA7294 by STmicroelectronics
I did a little cap replacement on my router (should have done the whole darn thing!) and my speeds are a little better.Re: Logitech Z-5500 recap and speaker connection mod.
Mosfets... what ic do you want to know?
A few small ics say this
r4580I
75khov5[SIZE=1]g4[/SIZE]
rgsgww
Member
Last Activity: 08-21-2012, 06:51 PM
Joined: 04-08-2009
Location:
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Re: Chip type SMT electrolytic capacitor value chart?
I tried to get pics, but the writing is too fine.
There are 5 different caps,
1:
100
16s.
7Q8
2:
10
16s.
7I7
3:
100
16s.
7Q7
4:
10
16s.
477
5:
4.7
35s.
d87
I assume that the first row of digits must the the capacitance, might be in uf. But my assumption is not really assuring....Leave a comment:
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Chip type SMT electrolytic capacitor value chart?
How do I identify capacitors like these (not mine, just example)
I cant find a chart online. -
Re: Logitech Z-5500 recap and speaker connection mod.
Yeah, I know to do the caps aswell. Was in a hurry typing.
Looks like all of the caps are sl series.Leave a comment:
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Audio capactors, what are they? Whats about their esr?
What is the difference between audio capacitors and normal ones. Is there an esr difference? What would happen if somebody used audio caps for an audio power regulation circuit.
Also, I cannot seem to find any esr ratings for caps even on the datasheets.
Thanks for your time
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Re: Logitech Z-5500 recap and speaker connection mod.
It looks as if the rest of the caps are from the audio section. I will try to look around, maybe I can find some logitech datasheets, etc so I can get a better idea of the board layout.Leave a comment:
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Re: Amp mosfet thermal tape?
Alright, it should be better than the old caked on thermal paste. Wasn't as bad as my mobo's. That stuff was like dust.Leave a comment:
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Re: Amp mosfet thermal tape?
This should work for me, what do you think?
[url]http://www.rapidonline.com/Electronic-Components/Semiconductor-Hardware/Thermal-Pads/T-Pad-6000-Ultra-thermally-conductive-pad/77135[/url]Re: Amp mosfet thermal tape?<br /> ...ad/77135[/url]Leave a comment:
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Re: Amp mosfet thermal tape?
Thats what I thought. Those things are not very thermally conductive. The original insulators crumbled.
I will look for tape or pads. I have found some places on the net
Leave a comment:
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Re: Logitech Z-5500 recap and speaker connection mod.
Ok.
Upon removal of the large 10000uf caps I was able to identify 2 more caps, which are 47uf 50v. Unlike the majority 35v. This is the replacement cap I'm looking at. [URL=http://www.mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMsCnlYck6hSqCamTi7t9jOG%2fmp0jXtC2oE%3d]47uf 50v[/URL]
Here the board's power regulation area. (little big, ask if you want it a little smaller.....)
[url]http://i428.photobucket.com/albums/qq5/rgsgww/100_5494.jpg[/url]
...Leave a comment:
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Amp mosfet thermal tape?
The mosfets on my amp need to be electrically insulated from the heatsink. I have no insulating thermal tape. Would electrical tape or a piece of think plastic be good? Just cant find the proper tape. -
Re: Logitech Z-5500 recap and speaker connection mod.
Nichicon audio caps, check my cart out.
[url]https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=2eb1ba4d6a[/url]
Yeah, I am surely a capacitor noob. I am very knowledgeable in higher voltages-power distribution, etc.Re: Logitech Z-5500 recap and speake...oob. I am veryLeave a comment:
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Re: Logitech Z-5500 recap and speaker connection mod.
I found an awesome distributor of caps, etc.
[url]http://www.mouser.com/[/url]
Do you think I should replace the caps in the controller that decodes the optical signals, controls volume, etc. Or is the amplifier part the most important?
I'm going to keep the copper clad.
Digi key said that it might take until may 25 for most of my caps to be available.
I'm going to go dissemble my modem and go look for bad caps in there. I read a thread about a guy who...Leave a comment:
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Re: Logitech Z-5500 recap and speaker connection mod.
Yeah, It is a $200 system, I don't think any miracles are going to happen, I just like to hack things to make them better. I oc my computer, etc.
I did upgrade to 18 stranded (previous was 22)
I suppose I will pull the sub out and resolder some 14 stranded.
I was thinking of replacing the polymers and ceramics, but you changed my mind.
Those black wires on the picture that shows the polymers are sort of "interconects" They are 22 awg aluminum....Last edited by rgsgww; 04-08-2009, 07:22 PM.Leave a comment:
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Re: Logitech Z-5500 recap and speaker connection mod.
I never liked su'scon caps, I also want to use a better quality, low esr cap.
Really? Alright, I will not redo those. I kind of realized that while looking at different caps.
Yeah, thats what I thought. I had all of this 12/2 romex around and it really did sound good....Leave a comment:
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Some pics
Speaker connectors...
Speaker pins
12 awg power cord with ground installed, removed metal oxide varistors so its a little messier.
Subwoofer caps
Subwoofer caps and the boards power capacitor
Eww...goey thermal paste with insulators for the mosfets
Poly caps
Ceramic disk...Leave a comment:
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Logitech Z-5500 recap and speaker connection mod.
I'm recapping my logitech z-5500 because 1-I'm a hacker who likes to hack stuff to peak potential and 2-Because it is filled with crappy su'scon capacitors (I would expect such capacitors in a cheap system).
The speaker connection broke on me (12 awg solid did it...) so I'm just going to solder leads out of the board.
This thread is going to list my progress on the mod. It may have a few questions along the way.
Anyways, I'm lost at finding the right ceramic disk caps and polymer.
There are no voltage labels or uf, just a few numbers....
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