Hi, all. I would like to ask for your opinion, guys. It is about capacitor replacement, but please read the description:
I have these wireless SONY headphones MDR-RF820R, which work OK most of the times. However, the transmitter (base) would sometimes behave as if it had a drop of power. This happens very shortly after it is put in use (powered on), and would repeat this loss of power on its own and in random cycles. The "Power ON" LED would blink for a second, and the whole base would shut down for that bit of a second at the same time, then immediately resume back to normal - as if somebody quickly unplugged and then replugged the power cord. While this power outage occurs, because of an obvious signal loss, the headphones produce a very loud and unpleasant scratching sound during that bit of a second. So if I am in the middle of some listening to the music, this literally hurts my ears, especially if the volume is higher. As soon as the base resumes its operation, the headphones work normal as they are receiving the signal again.
Because it is the base that showed this weird behavior, I opened it up. Upon opening the base, all the capacitors inside are Rubycon YX series and they are mostly 50V 47uF or 10uF, except for the three larger capacitors which are 16V, 220uF and they are all Sam Young SHL series. None of the capacitors looked bulgy or somehow suspicious.
Now, while testing, I put three Rubycons on the soldering places of these three Sam Youngs (one for each of them) just to see if there would be a difference. I chose them because following the paths on the board all of them were connected to the main power and negative lead, so I though they are probably there to provide stable current or something. The Rubycons I've connected were 16V, 470uF, YXG series (I had those at my disposal). The problem immidiately disappeared! Now, can you tell me, can I remove these Sam Youngs and replace them with these Rubycons which are twice as much the capacitance? Is this difference in capacitance safe?
The base is powered by an AC-DC adaptor which outputs a 9V DC.
Thanks in advance for your suggestions, I would really like to fix this if possible. I stopped using them because of the constant anticipation of the unpleasant sound while listening to something.
I have these wireless SONY headphones MDR-RF820R, which work OK most of the times. However, the transmitter (base) would sometimes behave as if it had a drop of power. This happens very shortly after it is put in use (powered on), and would repeat this loss of power on its own and in random cycles. The "Power ON" LED would blink for a second, and the whole base would shut down for that bit of a second at the same time, then immediately resume back to normal - as if somebody quickly unplugged and then replugged the power cord. While this power outage occurs, because of an obvious signal loss, the headphones produce a very loud and unpleasant scratching sound during that bit of a second. So if I am in the middle of some listening to the music, this literally hurts my ears, especially if the volume is higher. As soon as the base resumes its operation, the headphones work normal as they are receiving the signal again.
Because it is the base that showed this weird behavior, I opened it up. Upon opening the base, all the capacitors inside are Rubycon YX series and they are mostly 50V 47uF or 10uF, except for the three larger capacitors which are 16V, 220uF and they are all Sam Young SHL series. None of the capacitors looked bulgy or somehow suspicious.
Now, while testing, I put three Rubycons on the soldering places of these three Sam Youngs (one for each of them) just to see if there would be a difference. I chose them because following the paths on the board all of them were connected to the main power and negative lead, so I though they are probably there to provide stable current or something. The Rubycons I've connected were 16V, 470uF, YXG series (I had those at my disposal). The problem immidiately disappeared! Now, can you tell me, can I remove these Sam Youngs and replace them with these Rubycons which are twice as much the capacitance? Is this difference in capacitance safe?
The base is powered by an AC-DC adaptor which outputs a 9V DC.
Thanks in advance for your suggestions, I would really like to fix this if possible. I stopped using them because of the constant anticipation of the unpleasant sound while listening to something.
. If you want me to read some markings on the surrounding components, feel free to ask. I can also try to make some clear pictures if that'll help, just tell what specifically to take picture of. 
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