Capacitor brand identification?

[stj]

Re: Capacitor brand identification?

could be,

i used to remove all the cam related stuff.
so my decks were completely manual.

ont the subject on "manual"
http://www.vinylengine.com/library/sony/ps-4300.shtml

[stj]

Re: Capacitor brand identification?

http://freeservicemanuals.info/en/se.../Sony/PS-4300/

[markusm]

Re: Capacitor brand identification?

http://freeservicemanuals.info/en/se.../Sony/PS-4300/

Yeah, I already have all the service manuals etc... available from vinylengine.com.

As I stated before... in order to get to the stuff I have to take the tonearm out... and I think I need more practice before I attempt those tiny little tonearm wires.

The other problem with those manuals is that it states that the TT is "pre-lubed at the factory for the life of the turntable". So I'm not even sure what lubrication would be appropriate yet. The Dual turntable manual lists 4 or 5 different oils/greases and has a picture that points out which should be used at which lubrication points.
I guess Sony just figured if it the turntable outlives the lubrication it's just time to buy a new one.

[stj]

Re: Capacitor brand identification?

it could still be an electronic problem,
i looked at that manual and it's the most complex motor-driver i think i'v ever seen!

[markusm]

Re: Capacitor brand identification?

it could still be an electronic problem,
i looked at that manual and it's the most complex motor-driver i think i'v ever seen!

Yeah, I've really been leaning towards that, especially after seeing a guy with another similar model fixing his by replacing all the caps.

As you, and others frequently mention here... at this age those caps are going to be out of spec anyway, so I might as well replace the caps. If that doesn't fix it, at least it's that much more solder practice to get me closer to being comfortable with soldering the tonearm wires.

I was going to ask for tips on locating the leads on the bottom of that main board once I get away from the edges, but it looks like that diagram of the main board in the manual shows me that pretty clearly.

[markusm]

Re: Capacitor brand identification?

I'm just now getting around to (about to) ordering the caps for this thing, but I just ran into a bit of a snag, and something else a little weird...

The snag: There is one SL series cap that is 25V 3.3 uf, there is no replacement SMG series cap with that value, the lowest available cap is 4.7 uf in 25V. The next higher one available in 3.3uf is 50v but I have no way (so far) of knowing what the other values would be (ripple current, esr, etc...) I just looked and at 10uf there is a difference of 7 on ripple current between 25V and 50V SMG caps, and the difference seems to get higher the higher the uf rating... at 3.3 would the difference be enough to matter?

The weird part: The manual shows that that 25V 2200uf cap I replaced on the power supply board should be 32V 2200uf. I know the original in both turntables was 25v (took pics) and there is no SMG replacement for 32V, only 35V.

However, the 25v 3.3uf, I have confirmed that value is on both the actual capacitor and in the manual... there is just no replacement smg cap with that value.

[lti]

Re: Capacitor brand identification?

Use the 3.3uF 50V caps.

Measure the voltage across the 2200uF cap to see if the higher voltage cap would be better. If the voltage is really close to the voltage rating (like 24V), a 35V cap might last longer.

[budm]

Re: Capacitor brand identification?

Low capacitance <10uF and in this application, ESR will not matter, we are not dealing with switching power supply circuit. The big cap such as the 1000uF and up that are used in the power supply filtering (at 120Hz in this case), the ripple current handling will be considered.
So do not worry about the low value caps.

[markusm]

Re: Capacitor brand identification?

Use the 3.3uF 50V caps.

Measure the voltage across the 2200uF cap to see if the higher voltage cap would be better. If the voltage is really close to the voltage rating (like 24V), a 35V cap might last longer.

Thanks, for the adivce on the 3.3/50 caps.

As for the 25V 2200uf cap, I'm fine with the replacement since it should work. I just don't understand why sony would install a 25v cap, and then put 32V in the service manual. As I said, I have two of these turntables and they both have the same caps installed.

[markusm]

Re: Capacitor brand identification?

Low capacitance <10uF and in this application, ESR will not matter, we are not dealing with switching power supply circuit. The big cap such as the 1000uF and up that are used in the power supply filtering (at 120Hz in this case), the ripple current handling will be considered.
So do not worry about the low value caps.

Cool, thanks man. That's what I was hoping.

[markusm]

Re: Capacitor brand identification?

I can't find anyone online that has this cap in stock: ESMG100ELL470ME11D. Can anyone tell me another brand/series that would be close to it's specs? I was able to get all the other caps (from 3 different sites), but no one seems to have this one.

It's a 10v 47uf cap, The ripple current for this is 100 according to the data sheet, but I can't seem to find anything about the ESR for it.

**Edit**
I went over the data sheet again and noticed that some other series of caps do list an ESR. Could it be that on some applications the ESR doesn't matter, so they don't bother listing it? Also, concerning ripple current... if I can't find one that matches would I be better off with a cap that has lower or higher ripple current? I have found a panasonic FC series that is 10v 47uf and has a ripple current of 120, and also doesn't list an ESR.

[budm]

Re: Capacitor brand identification?

For this turntable, do not worry about the ESR.

[kjn4685]

try this

As long as you keep the same value you will are right

[markusm]

Re: Capacitor brand identification?

Thanks guys, I ordered the last 2 caps earlier today, just waiting for everything to come in so I can get started. I'll post the results when I'm done if anyone's interested.

[markusm]

Success!

I replaced the 29 Electrolytic caps left in the turntable and it works perfectly now! Thanks for all the advice. This forum and Audiokarma are by far the 2 best forums I've ever been a part of.