Sony Repair Tips

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Make	Model	Symptom	Problem
SONY	PSX70	Weak motor	Tone arm would not complete return and play cycle wouldstop widway most times.
SONY	PSX40	Defective mgh	Turntable speed erratic. maximum output from mgh was 15-20mvp-p. even slight readjustment of the head caused it to scrape theplatter.
SONY	PSX30	Loose lead on c101	Frequent slowing down of motor. found one lead of c101loose.
SONY	PSX30	Defective detection lever	Scraping noise. cause: detection lever had been jammed underprotrusion on bottom of cam gear in shipping and was permanently warped.this was touching the top of the magnet ass'y on the motor shaft.
SONY	PSX20	Defective ic101	In play mode turntable operates normally, in stop mode (poweron) turntable rotates backwards. in stop mode, ic102-2 output goesnegative 2.1v and inverting input remains slightly positive (pin 6). theoutput of logic pin 6 of ic101 remains at +1 volt. g
SONY	PSX7	Defective q203	Automatic function engages when power is turned on or off, andspeed varies. this only occurs when unit is cold.
SONY	PSX7	Replacement motor will not mount	During troubleshooting, we found that replacement motor(a-460-801-9a) would not mount properly. dimensions of motor shaft andspindle were different.
SONY	PSX6	Open cap c205	After several minutes of operation platter slows down and getsprogressively slower.
SONY	PST25	Spacers to remove	Platter scrapes on side opposite tonearm.
SONY	PS212	Leaky q3	Turntable speed is too fast.
SONY	PS20F	Replacing stylus	The stylus of the moving coil cartridge for the ps-20f isreplaceable. the part number is nd206.
SONY	MDR3L2	Wires break	The distributor (norcal) has reported to me several brokenwires on these units. the wires break at the plug end.
SONY	M200	Spring out of location	Switch sw3 did not move to off position when stop buttonengaged. problem was spring (3-561-626-00) was off at stud end, not slideend.
SONY	M101	Short on mic.	No sound.
SONY	ICFS5W	Solder connection	Sound would come on loud then become low and distorted.
SONY	ICFC805W	Defective ic and r602	No light in display tube. low b+ to ic.
SONY	ICFC805W	Bridge solder connections on pcb	Clock running 10 seconds fast per minute.
SONY	ICFC511W	Defective clock	The time the alarm is set for moves with the rest of theclock. it will not stay at the time set.
SONY	ICFC411W	Incorrect part number - reversed	Incorrect part number - reversed.
SONY	ICFC410W	Defective d4	Continuous hum as if bad filter capacitor caused by shorteddiode, d4 replaced d4.