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The DIY Discman Repair Thread - Page 25

post #361 of 440
2/16/07 at 5:01am
Sounds like it could be one of the coupling caps, John. Coupling caps are capacitors used to remove the DC component of the signal from the output of either the DAC or the op-amps functioning in the low-pass filter stage or, in some cases, the I-V (current to voltage) stage. On a single supply (that is, only positive voltage rather than + and - voltage), the way you get bipolar swing is to apply an offset, swing against that, then use coupling caps to remove the DC so you get a +/- AC swing. When the caps go bad or otherwise wear out, you can get distortion.
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post #362 of 440
2/24/07 at 7:14pm
I got a D-2 from ebay,arrived today but is a little sick .Has some skipping problems but only in the first 15-20 min of a CD usually the first 3-4 songs...After that it plays fine.Seller said that it has no skipping probs so i'm a little mad
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post #363 of 440
2/24/07 at 9:22pm
Update:i cleaned the lens with q-tips and now it plays regular CDs fine.However there is still some skipping with CDRs at the first 3-4 songs.I'll see if some lubricating can fix this.I only use quality CDRs(made in japan Thats/TY written with Plextor in slow speed).
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post #364 of 440
3/1/07 at 4:41pm
So has anyone compiled a list of the known to fail SMD's for the different players? I still want to purchase the items I need for my 555 but do not know what I need...

Can someone provide a list of what to purchase? The ones that commonly fail and what people have successfully replaced them with? That would be awesome!!!
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post #365 of 440
3/6/07 at 12:25am
I don't think anyone has done that. I don't have a D-555 or a service manual for it, so I couldn't tell you what they are, either.
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post #366 of 440
3/19/07 at 9:39pm
Quote:
Originally Posted by Duncan View Post
Oops

Good job I prefer the sound of the 211 to that of the 311... the 311 officially died at 21.00BST 09/25/2003

It sounds like the power regulator has failed... pops when the PSU is plugged in the back, and whistle through the headphone out when batteries are plugged in... regardless of whether the lid is open, closed, disc inserted or not... the whistling stops when you press play, but nothing happens... Also the whistling is at a constant volume regardless of what the pot is set to...

R.I.P. D311
Duncan - my D-311 JUST did this exact same thing last thursday, and has become a paperweight... Bummer as I really enjoyed that one.

My D-303 has the oh-so-common skipping problem, so I am gonna tackle the pots as soon as I can.

Cheers!

-Jacob
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post #367 of 440
3/24/07 at 3:42am
Hmm, open the D-311 and check the caps to see if you've got leakage or bloating. Could also be it has reverse voltage protection and that somehow failed and needs to be fixed. I had a PCDP once that needed that.
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post #368 of 440
3/29/07 at 11:21am
Hi all
My D-22 plays most everything without demur but on 'electronica' (Popol Vuh; Aphex Twin Ambient vol 2 for example) there's some distortion on some of the notes. Haven't noticed it on other music, apart from some notes of the electric keyboard on The Doors Riders on the Storm, and I've yet to listen to any classical to see if it's there in the strings -don't know why it should be, but I have a feeling it may -long, drawn out notes perhaps).

Any ideas why? The player is in very good condition & appears to work pretty much perfectly otherwise, apart from an occasional break up/skip.
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post #369 of 440
4/13/07 at 11:37am

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post #370 of 440
4/16/07 at 3:40am

D-515 does not read CDs - laser problem?

Hi all,

I spent some times treading many posts here, but still not quite know how to fix my D-515 yet.

The problem is that when I load the CD, the unit spins, try to read with "Disc" word blinking. But then stop and the CD still keep spining fast. I first guess that the laser lens might have some problems.

I tried trick the unit by pressing the small button to make it thinks that the CD is loaded and the lid is closed. Still, it acts the same way.

Anyone knows?

Thanks!
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post #371 of 440
5/2/07 at 12:20am

d-5 issues

I've been using a sony d-5 for a few months now. I love the thing. Lately it has been acting up. I'll start listening to a disc, and it will just stop for a breif moment then continue playing, as if someone quickly hit pause. if i restart a few times it clears up but this is quite a nuisance. Is there a way to fix this or is she dying?
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post #372 of 440
5/2/07 at 6:33am
Quote:
Originally Posted by Lur View Post
I've been using a sony d-5 for a few months now. I love the thing. Lately it has been acting up. I'll start listening to a disc, and it will just stop for a breif moment then continue playing, as if someone quickly hit pause. if i restart a few times it clears up but this is quite a nuisance. Is there a way to fix this or is she dying?
That happens when the error correction circuit gets overwhelmed and was a fairly normal occurance on machines from that era albeit usually a rare one.

I'd say your laser isn't reading as well as it should be perhaps? is this confined to particular discs? CD-R's ?

Have you tried cleaning the lens? You can wipe it very very gently with a cotton bud ( Q-tip) and some isopropyl alcohol but be careful not to drip any into the mechanism.
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post #373 of 440
5/2/07 at 8:04am
Quote:
Originally Posted by Lur View Post
I've been using a sony d-5 for a few months now. I love the thing. Lately it has been acting up. I'll start listening to a disc, and it will just stop for a breif moment then continue playing, as if someone quickly hit pause. if i restart a few times it clears up but this is quite a nuisance. Is there a way to fix this or is she dying?
Clean & lube the worm gear perhaps (guessing here)?
Might have got 'sticky'....
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post #374 of 440
5/2/07 at 9:25pm
Thanks guys. Getting to the worm gear will be interesting. I popped off the bottom of her this morning, and prodded around and she did well on the bus ride. Hopefully she'll last. Only thing i got thatll power my Pro4aat (yea, i look like a deuschebag in public with them:P)
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post #375 of 440
5/3/07 at 7:19am
Quote:
Originally Posted by Lur View Post
...on the bus ride.
You do realise of course that this player has next to no antishock protection and walking around with it will also cause it to mistrack?
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