fuzion78
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Posts posted by fuzion78
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Yes, you will need the docking station for it to work
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Why not get a car amplifier in replace instead?
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My iFi volume control is not working properly,i have to turn the knob "a few roundssss" before the volume could be increase / decrease.
my is also 230V. What i did was i acutally ground the panel. i was actually thinking of using a EMI / EMC filter (3 pin) to improve the audio quality.
if i remove the 'resistor' i wouldn't able to power up the iFi because apparently it has been cut thus leaving the power and fuse lead an open circuit. it was wired to the burnt marks on the right but i moved it to the left so it looks neater.
bad news, another pops and short crackle within 24h left on with iPod Nano 2G (8GB) docked. good news is yes, no more hissing sound. before the caps replacement i can hear some hissing when it charges the ipod and it's noticeable.
i have a feeling i need to change the 4 bigger caps into better one. well, i probably change 5 of them. thing is i need to find 'taller' instead of 'fat' capacitors so it can fit without having to use cable or separate small PCB. probably do it next month when i got the time.
what happened with your iFi? -
Regarding the so call "resistor, could it be Class X capacitor, which is acutally a “across-the-line” Line Filter Capacitors.
Anyone trying replacing the 2 pins inlet with an IEC line fillter before?
i just replaced the 4700uF 25V with SMG 6800uF 25V. i bought 5pcs of ELNA 6800uF 35V but it's way too big for any of them. paralleling them is possible but not now.
so tried to replace the 25V first. well during few hours of testing the crackling sound still appears one time. Before that it was very often. Also, right channel went out, turns out that i need to wiggle the DIN cable behind the dock to certain angle to make both the satellites sound from iPod or AUX2. using AUX1 is fine.
will test if it starts to act up during this few days. also, i noticed that my set (from eBay) comes with a resistor across the power cord and fuse. the guy cut the 'connection' between the fuse and power line, and used a unknown rated resistor as connection. probably to save the fuse.
at least now i'm enjoying the great sound of iFi without the usual hiss and crackle. -
Please keep us update on your modification, especially since you replace the 25V 4700uF to a 6800uF. Not really sure if suck big capacitor helps since it used for the docking statio
i just replaced the 4700uF 25V with SMG 6800uF 25V. i bought 5pcs of ELNA 6800uF 35V but it's way too big for any of them. paralleling them is possible but not now.
so tried to replace the 25V first. well during few hours of testing the crackling sound still appears one time. Before that it was very often. Also, right channel went out, turns out that i need to wiggle the DIN cable behind the dock to certain angle to make both the satellites sound from iPod or AUX2. using AUX1 is fine.
will test if it starts to act up during this few days. also, i noticed that my set (from eBay) comes with a resistor across the power cord and fuse. the guy cut the 'connection' between the fuse and power line, and used a unknown rated resistor as connection. probably to save the fuse.
at least now i'm enjoying the great sound of iFi without the usual hiss and crackle. -
The values are (correct me if i'm wrong)
10 x 104J63 = 100,000pF 5% 63V
2 x 272J63 = 2700pF 5% 63V
4 x 474J63 = 470,000pF 5 % 63 V
As the capacitor pitch = 5mm and the tolerance is 5%, there going to be limited choice of flim capacitor for used.
All the values look correct to me.
Found a bunch of 63 volt cap photos here. Many similar but nothing exact.
http://www.sportslinkup.com/shop/0-Capacitor-63v-1.html
What makes you think they need replaced?
Electrolitic capacitors built in the early to mid 2000 range are always suspect, but these?
I fear you may be just making work for yourself. I could be wrong.
Thank dbert.
I'm replacing these capacitors to improve the sound quailty. But I must say it difficult to get good capacitor with the right pitch size.
For those interested:
- 104J63 may be replaced with WIMA MKP2 or Kemet PHE426
- 272J63 may be replaced with Kemet PHE426
- 474J63 can't find any cap with the same pitch size
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Here the photo
The values are (correct me if i'm wrong)
10 x 104J63 = 100,000pF 5% 63V
2 x 272J63 = 2700pF 5% 63V
4 x 474J63 = 470,000pF 5 % 63 V
As the capacitor pitch = 5mm and the tolerance is 5%, there going to be limited choice of flim capacitor for used.
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Any know what are those yellow box things found in the PCB? Looks like Metallized Flim capacitors (Polyester or Polypropylene)
People out there. Any helps on the above? Are those Metallized Flim capacitors?
If YES, any review on WIMA MKP or EVOX RIFA series of flim capacitors?
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Any know what are those yellow box things found in the PCB? Looks like Metallized Flim capacitors (Polyester or Polypropylene)
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I've finally replaced all the capacitors. Before that only the 5 big capacitors were replaced.
All capacitors used were from Nichicon KW series and ES series (for one Bi-Polarized capacitor only)
And WOOOOOO!!!!. The sound really open up!!!! Clear and Sweet.
BTW, what type of adhesives are you using to hold the capacitors in place? Can the hot glue gun do the job.
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For people who are interested to recap the whole board, take note that the 1uF 50V x 1 is a non-polarized capacitor
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dbert, when you saystill good? Does that mean your volume control is working fine as well?
I need to change all capacitors in order to get the volume control working again
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Try Mouser Electronics
They have full range of Nichicon FW, KW, KG audio capacitors.
Need some advise - Anyone trying using a Snap-in Terminal Type capacitor in replace fot the 5 big capacitors? Is the drill hole size big enough?
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Good for you dbert!!! Great that your iFI works again!!!.
For those who have channel problem (e.g. one working while the other not). You will have to check the condition of the capacitor sandwich inbetween the board. If i not wrong, there a 6 x 470uF 35V.
Be careful when desoldering the capacitors. Those soldering pad is horrible!!! (TOO SMALL FOR GOOD CONTACT and might come off easily if not handle with care)
Capacitor to use? Panasonic FC series or Nichicon FW series. Not the best money can buy but value for mone
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These are the list of capacitors found inside
4700µF 35V x 4
4700µF 25V x 1
470µF 35V x 6
10µF 25V x 3
1µF 50V x1
100µF 16V x 2
220µF 35V x 2
22µF 100V x 2
TOTAL of 21 Capacitors
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You will need to replace ALL the capacitors, meaning all the 5 large capacitors (4 X 4700µf, 35v + 1 x 4700µf, 25V) PLUS all those found in the PCB board (sandwich in below the heatsink)
Place the capacitor with the exact value and voltage rating.
DO NOT REPLACE WITH ANY OTHER VALUE.
Go for brands like Rubycon, Nichicon, Panasonic, etc
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Refer to phots posted by dbert
http://www.justwebspace.com/G2/thumbnails.php?album=1
You will see that the i-Fi used capacitors from Rifeking Electronic. Do a quick search and you will find review of these capacitor.
You might like to replace ALL the capacitors found inside the sub-woofer panel.
i-Fi volume control malfunction
in Personal Music Systems
Posted
Any one knowwhat the VA rating of the iFi toroidal transformer? Wanting to change the "softstart" circuit .