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Make	Model	Symptom	Problem
SONY	XR33	Unable to preset memory	#1, #2, #3 & #5 presets inop. #4 works normally. #6 willpreset a station, but displays its position as #2. i noticed i had topress hard on the keys to get a response.
SONY	STRAV340	Bad capacitor - c303	Main power switch would work but system power switch didnothing. manually resetting up ic301 would power unit up. furthertroubleshooting found an open capacitor on the reset line.
SONY	KV25DXR	Intermittent loss of sound and video	Intermittent loss of sound and video. the bracket that theb board is mounted on has a small section which contacts the transistor,q2030. the emitter and base lead are shorted together causing thisproblem.
SONY	CDP70	Intermittent skipping	I found that it would require a higher dc voltage to drivesled motor at or around the first track.
SONY	SLHF900	Picture break-up during transition from line-in to tuner-in	Problem occurs when connecting two different power supplys, one tovideo input, the other to the rf input. during recording the input selectswitch is switched, between video and tuner input. during pb, some unitsdisplay a loss of sync during transition betwee
SONY	CCDV110	X303 replacement part	Need p/n for x303 on ss-64 board, 4mhz crystal. replacementpart physically too large. -hq comments: replacement part is physically different, but does fitin holes in pc board. checking stock for misorder or mixed stock.
SONY	XR47R	Micro scan input disconnected	No preset memory, no time set.
SONY	SPP100	No charge indication	Battery won't charge. charge led off. main pcb differentfrom service manual. part # of board was 1-620-939-11, photo on page 23of service manual shows 1-618-075-12. found r603, r602 were wountedaway from circuit pattern.
SONY	PSX75	Intermittent lifter operation	Tonearm would go to correct drop-point, but lifter would notdrop. touching the tonearm would cause lifter to operate.
SONY	TAAX335	Speaker protection engages at approx. mid volume level	The speaker protection engages at about mid volume level. wefound the problem to be caused by excessive voltage on the output ic. theb+ at pin 14 measured 48v and b- at pin 12 was -47. the voltage on thesecondary to be 71vac. by reducing the input ac
SONY	CFS9000	Excessive volume at low settings - av power only	With ac power there is excessive volume on low settings.battery operation ok. problem was excessive voltage on the 13.6v line.this line powers the output ic and when using ac power reads 39v. checkedthe transformer output and found the red secondary le
SONY	SPP100	Phone intermittently loses power	Unit intermittently loses power during talk mode. unit locksonto line and will not hang up till power is removed. problem appears tobe bad contact on battery in hand unit due to weak battery springs.
SONY	AG500	Compatibility with current betamax models	Are there any current betamax units which are compatible with ag-500? -hq comments no, only the sl-2700, -2710 and -2410 are compatible.
SONY	XR550R	Won't tune upper half of fm band	Won't tune in upper half of fm stations. 87.9 to 97.9 mhzrange - all normal. stations above 97.9 are found to be 0.2mhz lower thanthe station frequency.
SONY	SL8600	Need guide located in cassette lift ass'y	Refer to page 8-2 of service manual. please inform p/n forguide located below the right side of holder ass'y, cassette. -hq comments: p/n is 3-655-232-00. kcp shows no stock but will orderfrom tokyo after receiving your order.
SONY	KV25XBR	Shut down	Unit would shut down upon turn on. brought up set with lowvoltage, found shut down being activated at horizontal osc. found r1531was not a resistor but a capacitor. this set never worked. capacitorwas installed at the factory by mistake.
SONY	SSU780	Part numbers interchanged	Part numbers interchanged. incorrect correct1-503-597-11 1-503-598-11 tweeter1-503-598-11 1-503-597-11 mid-range -hq comments: a service bulletin has been issued.
SONY	KV20XBR	Rgb/video led	This report is to be added to the one sent in on 5/1/87.i failed to note that the problem of the rgb/video led's being lit wascaused by c121 related to the manual on/off function. when c121 wasreplaced, the rgb/video led's were still lit.
SONY	SSM910	No video	No video on screen.
SONY	KV25DXR	Locked in with service ready read out	Set was locked in with service ready read out on screen.operation of service switch made no difference. voltage and waveformanalysis did not help to isolate the problem to a particular component.i suspected the memory chip might be the cause so i replac