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Make	Model	Symptom	Problem
SONY	SLHFR90	Unit would not load tape	Unit would not load tape.
SONY	BMC220	Intermittent dew light	Intermittent dew light. customer had brought the unit intofsc twice before the unit finally failed.
SONY	SL2300	Power light stays on	Pushing of timer record button would cause power light to stay on and the tape would eject.
SONY	CFS3000	No sound on both channels	Output to headphone is okay, but no output to speakers.i found 3 units with the same problem.
SONY	SL2700	Capstan running too fast	The capstan was running too fast on this unit. all otherfunctions were ok. we found the fg1 input to the servo ic to be very low.the problem was caused by incorrect bias at the fg amp/ic306 p9, we foundc340 to be leaky. -hq comments: we received info.
SONY	SL2700	Clogging video heads	Lately we have been seeing a large number of units comingthrough with dirty video heads. sometimes the symptom is in the form of aslight vertical jitter. other times it is a traditional snowy picture.cleaning resolves the problem for only a short time.
SONY	SL2710	No beta hifi playback	This unit had no beta hi-fi playback. we found q002 to beopen on the af-2 board (9v pb switch). also changed was c002 as itappeared to be somewhat leaky.
SONY	KX2501	Jail bars, replaced c1527	Picture was slightly reduced in brightness and there werenumerous dark vertical bars across the raster, about one inch in width.i suspected some sort of oscillation in the horiz. output circuit,possibly caused by poor capacitor filter action. scoping tp
SONY	CFS5000	No sound on tape playback	No sound on tape playback. other functions ok. ams seems towork. in play (with cassette in) ams solenoid occasionally kicks.
SONY	WMF8	Buzzing noise	Buzzing noise through head phones in tape mode.
SONY	KV2670R	No brightness control, leaky d-301	Unable to adjust brightness. found abl clamp diode d301reading 100Ω both directions (forward and reverse).
SONY	CDP101	Sled goes to one end with power applied	With disc inserted for 2 to 3 seconds, it would eject disc.
SONY	TCFX510R	No record	This unit came in with no record function. rec led did notlight up because pin 35 of ic601 stayed low in rec mode. since this unitis old type, i ordered ic601 with the part #8-755-640-71. however the ici received from npc was a new type cx-564-072.
SONY	SLHF300	Drifting rf switching position	This unit shows the same problem as sl-2300/2400 series. rfswitching in picture of t/n #b0060 modifies to correct the problem in2300/2400 series. do we have a similar solution for sl-hf300? drum drivecircuit q15-q20 in sl-hf300 appears to be very simi
SONY	KV1911	Ringing on left side of screen	Ringing on left side of screen.
SONY	KV1961	Vertical jitter only on ch 10 off the air	Vertical jitter. only on ch. 10 off the air. worked normalon cable. transmitter was approx. 10 miles from dealer.
SONY	HVA220	Ac adapter no longer available	Customer purchased hvc-1000, ac adapter, cma-100. video is okbut audio was distorted. 800 # suggested him to purchase hva-220.
SONY	TCFX707R	No tape transport or int tape transport	No tape transport or int. tape transport.
SONY	TCK60	Part number missing	When ordering tape counter for tc-k60, service manual showspulley attached to the counter, however when received the pulley is notwith counter.
SONY	KX2501	C709 on "c" board reversed	In troubleshooting routine, i noted that c709 polarityindication on the pc board is reversed, likewise on the service manual.the positive element is shown going to gnd. this is incorrect. -hq comments: we will publish correction on this.