Sony PS-Q3

Sony PS-Q3
Preliminary Information
Release Year	1984
Leak Risk	Medium
Batteries	None
Mounting Technology	Through Hole
Capacitor Types	Aluminum Electrolytic, Ceramic
Destructive Entry	No

This device is in the WorkNeeded:OriginalParts category because it was flagged as missing information on the original parts. It may have replacement parts listed but those cannot be assumed to be identical to the originals. If you have a list of the original parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables

This device is in the WorkNeeded:ReplacementParts category because it was flagged as missing information on replacement parts. If it has the original parts listed you may be able to search for replacements using the parametric searches available from parts distributors. If you have or make a list of replacement parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables

This device is in the WorkNeeded:General category because it was flagged as missing general information about the device. The information may be incomplete, using default text, or inaccurate and should be verified with external sources if possible. If you can add or correct information on this page, please feel free to edit it and do so.

Sony PS-Q3 is one of the miniature Sony record players, the cheapest model of the 3 (others being the PS-Q5 and PS-Q7). The PS-Q3 is a belt driven, fully automatic device.

Known Issues

Symptom or Problem Encountered

Turntable not moving, arm not moving.

Capacitors are quality brand and before the capacitor plauge, so it is unlikely they leak. My device has a speed problem, and I run out of ideas, so I decided to replace the few caps it has.

Causes

Main belt turns into goo
Arm belt dries out

Solutions

Replace all belts

Disassembly Notes

Be careful with the screws, they screw into plastic and they can get brittle. Follow the arrows on the unit otherwise, just as with any Sony device. After removing the screws, the top shell comes off. Make sure to remove the cartridge first to give it enough room.

Original Parts

Basic PCB Name

Note model numbers and board revisions here

Capacitor Specifications and Footprint Information
RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Height	Lead Spacing	Temp	Brand	Series
C101	1	1000 µF	16 V	Through Hole Radial	13 mm	25 mm	5 mm		Nichicon	SE (M)
C102	1	100 µF	16 V	Through Hole Radial	8.5 mm	12 mm	5 mm		?	SM 4D
C103	1	47 µF	16 V	Through Hole Radial	6.5 mm	7 mm	5 mm	85	Enla	? (yellow sleeve)
C104	1	10 µF	16 V	Through Hole Radial	4 mm	7.5 mm	4.5 mm	85	Enla	? (yellow sleeve)
C105, C106	2	100 µF	6.3V	Through Hole Radial	6.5 mm	7 mm	5 mm	85	Enla	? (yellow sleeve)
C107	1	470 µF	6.3V	Through Hole Radial	10 mm	13 mm	5 mm		Nichicon	SE (M)
C108	1	22 µF	6.3 V	Through Hole Radial	4 mm	8 mm	4 mm	85	Enla	? (yellow sleeve)
C110	1	2.2 µF	50V	Through Hole Radial	4 mm	8 mm	4 mm	85	Nichicon	?

Replacement Parts

Belts

Exact original belt sizes are either unknown (main belts) or impossible to source (arm belt). These are the ones I managed to source easily, the main belts are from a local shop who supply them based on inner circumference, the arm belt is from ebay found as "D13".


Belt	Cross section	Diameter	Inner Circumference	Width	Note
Main, short	Square		30 mm	1.6 mm	Perfect fit
Main, long	Square		83 mm	1.2 mm	Should be thicker, maybe shorter
Arm	Square	D13	20 mm	1.5 mm	Should be thinner, maybe shorter

References