Elite/Chinsan aluminum electrolytic, EH series, 4.7 uF with maybe 20% tolerance, 100 V, rated to 105 C. If you search on the web site, Chinsan uses both 4.7 and 5 to refer to its 4.7 uF caps (and the usual 4R7 in parts numbers). The link in the post above me will get you started on your long, long journey through the Chinsan parts list... it's just a standard low-impedance cap so there are a lot of alternatives.
(Maybe that's a 47 and not a 4.7: the "." might be a reflection.)...
Bushcat
Member
Last Activity: 12-18-2024, 09:39 PM
Joined: 05-24-2023
Location: Tokyo
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Nichicon functional polymer, 560 uF, 6.3V...Leave a comment:
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Wot no edit button? EDLS should be EDLC. PCH113 = PCH1133. "As anyone..." = "Has anyone..."Leave a comment:
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Identifying a Pioneer PD-F1007 cap; looking for a PC-to-keyboard emulator
I picked up a Pioneer PD-F1007 300-CD changer very cheaply without the remote, marked as "junk". It's cleaning up very well: most issues seem fixable with contact cleaning, cleaning optics, etc. The series has a reputation for forgetting the immense amount of programming that goes into storing CD details, and it seems to be a common thing to swap out C354, part PCH113 which is 0.1uF/5.5V. However, I can't find out its design discharge rate.
Others have suggested various EDLS replacements including the Eaton KW-5R5C104-R, but comparing their specs the recommended discharge... -
Re: Pioneer PL-X9 motor speed control wobble
I could swap the rotor out from the second turntable. You're right, that needs testing. The design has the coils on the PCB. The rotating component is basically a flat disk with a large annular magnet. What is also the turntable spindle is hollow, and sits on a fixed shaft. The contact point is a teflon pad. It's all been cleaned and lubed. It spins reasonably freely. I do wonder if one of the coils is out, but it seems to test OK.Leave a comment:
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Re: Pioneer PL-X9 motor speed control wobble
So, I replaced all the electrolytics with new electrolytics and some tantalums, reassembled it and it still functions (yay!) but with the same speed wobble (awww...). I tested each cap as I removed it, hoping to find a dud, but they all tested OK.
So I think I'll do the caps around the xtal oscillator next. These are 33pF and 50pF 5% items; I've not been able to locate Japanese replacements yet.Leave a comment:
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Re: Which software do you guys have the best of luck with for recovering corrupt phot
I've use the free Recuva successfully: [url]https://www.ccleaner.com/recuva[/url]. Photorec (mentioned above) also does the job: [url]https://www.cgsecurity.org/wiki/TestDisk_Download[/url]. Neither are as fast as copying stuff from the backup.Re: Which software do you guys have ...ownload[/url].Leave a comment:
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Re: Pioneer PL-X9 motor speed control wobble
All of them. The board is upside down, underneath the turntable, inside the black plastic tray in that pic. It's actually slightly less in one corner, and the cap there is bent over. I'm not talking about the main PCB visible in that pic.
If tantalums are OK, then there is plenty of Tancap brand available, if that's a reputable company. I've just found some Toshin stuff, but it states it makes some components, and imports other components. I'm trying to stay with name brand Japanese caps if possible,...Last edited by Bushcat; 06-25-2023, 08:03 PM.Leave a comment:
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Re: Pioneer PL-X9 motor speed control wobble
I only seem to be able to get Rubycon PK series here, which start at 11 mm. I could lay a couple of the capacitors flat, but in general it's a tight fit in there in all directiones :-(Leave a comment:
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Re: Pioneer PL-X9 motor speed control wobble
I finally got all the replacement electrolytics to replace the existing ones. And... they're too tall. All the existing electrolytics are 7 mm tall, for every value from 0.47 uF 50V through 100 uF 10V. My replacements are 9-11 mm tall. The headroom above the board is 9 mm. So the replacements don't actually fit. For the life of me, I can't source 7mm tall electrolytics from brands I actually recognise. In general, could I use conductive polymer such as the Panasonic OS-CON?Leave a comment:
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Sony ICF-SW55 DC power socket
I'm trying to source a replacement DC power socket for a Sony ICF-SW55. I can't find the specific part for this radio, nor any other Sony product that uses the same part, nor anything with the same pinouts, nor a donor board.
As you can see from the circuit diagram, the functionality is pretty standard with an NC jack-operated switch across the battery, but the physical pin layout on is not. It's the yellow item on the PCB.
I do want to stay with the exact replacement, if possible. I've been looking for this thing for a few years now!... -
Re: Pioneer PL-X9 motor speed control wobble
Update: 18V rail is fine. The second "junk" machine is largely functional and has a perfect needle. In particular, it keeps good speed. However, it can't count beyond 5 tracks, and messes up jumping between them: it won't skip beyond track 3. Anyway, I put its motor control board into the original machine, which now has rock steady speed. However, the "can't count beyond 3" problem has followed it to the original machine, which seems counter-intuitive. Work interrupts for several days, when I'll re-cap both PCBs and...Leave a comment:
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Re: Pioneer PL-X9 motor speed control wobble
Vinylengine doesn't accept registrations from Japan, but I do have the two service manuals: the original with the stunningly arcane adjustment steps, and the simplified one which requires the special setup record. Also the Tuning Fork guides nos 2-9, which have been helpful.
Reading the spec on IC3, it seems like the RC mode is actually disabled. I'll check the 18VDC.
Thanks for suggesting alternative caps. I used to be pretty OK at audio repairs decades ago, and have started to revisit my youth, buying the...Leave a comment:
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Re: Pioneer PL-X9 motor speed control wobble
The 33pF cap is indeed connected to the xtal. So this would be a Class 1. It seems CH is interchangeable with C0G and I've seen datasheets for Murata, Kyocera and TDK.Leave a comment:
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Pioneer PL-X9 motor speed control wobble
I'm starting to re-cap a Pioneer PL-X9 turntable, specifically the motor control board, because although everything tests out OK according to the service manual, the speed wavers slightly despite the quartz lock light remaining on. So, I've decided to re-cap that board since it's the cheapest next step...
Pioneer's passive component naming convention is clear to me. For example, CSZA R22M 35 is tantalum, radial leads, 0.22uF, 20%, 35V.
BUT there are two capacitors on the board which have actual Pioneer part numbers: PCL-042. I can tell they are 0.1uF, 16V but don't... -
Re: Post help identifying capacitors here
I'm starting to re-cap a Pioneer turntable, specifically the motor control board. Pioneer's passive component naming convention is clear to me. For example, CSZA R22M 35 is tantalum, radial leads, 0.22uF, 20%, 35V.
BUT there are two capacitors on the board which have actual Pioneer part numbers: PCL-042. I can tell they are 0.1uF, 16V but don't know why Pioneer would do this, unless the capacitors are special somehow. Any ideas?
There's a second oddity: CCDCH 330J 50 means ceramic disc, disc-type radial leads,...Leave a comment:
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