Repair Tips

Search:
Results: 87715

Make	Model	Symptom	Problem
SONY	KV1952RS	No channel indication, q2002 open	This unit had no led drive for the channel indicator. alsosound, pix, channel controls did not work. it gave every indication of alocked up upc. we found q2002 on m board to be open and causing theproblem.
SONY	PSLX55II	Tonearm not dropping	Tonearm would not drop to record.
SONY	BMC550	Lithium battery	One customer has lost lithium battery already one customerbattery was missing from carton and one wants to purchase replacementjust to be on the safe side.
SONY	SL2710	Unit pulsates between record and pause modes in steady cycle	When entering rec, unit would cycle between rec and pause ata rapid frequency. random pulse at collector of q517, ss-21 board causedproblem. q518 was found defective. replaced q518, unit ok.
SONY	CDXR7	Wrong part number	Transistors q1 and q2 are listed as 8-759-105-29 on page 69of service manual. correct number is 8-729-105-29. -hq comments: we will issue a t/n and s/b.
SONY	RM704	Rm704 is not available	Rm-704 is not available. npc substitute part is rm-708, butshape is not the same. if size and shape is more important to customer,can rm-706 (a-1009-074-a) or rm-705 (not all function) be substitutedsuccessfully? -hq comments: as replacement of units
SONY	AIR8	Display malfunction	Low or no audio, all segments of the display come on when astation is received, but display acts normal in scan mode or when unit isnot tuned onto a station, also display blanks out completely in psb mode.
SONY	STRAV460	Background noise	In fm mode after 45 to 90 minutes there is excessive back-ground noise. also, the sensitivity seems to have decreased. -hq comments: if the problem is in the fm, i would suggest you wouldheat-test q101 rf amp. also check the transistor mechanically, o
SONY	CDX5	Noise	When using a cdx-5, xr-65 and xm-55 and listening to a disc,sound is very clean when listening to either a tape or radio, excessivemotor noise shows up in the system. though, when bypassing the cdx-5 themotor noise disappears. one dealer has tried as m
SONY	KV25XBR	No rgb output	Set had no rgb output when unboxed. scope showed good videoin at ic301 pin 3 and also pin 2 but no video out at pins 32, 33 or 34.a check of supply voltages showed the following: 140 volt line was 130volt. 16 volt line was 15 volt. 8 volt line was 7
SONY	BMC110	Correction to supplement #1	Page 8 ref. 334 and 338 reversed in expl. p/n 3-681-404-01(flange 334) 3-681-410-01 (nut 338) -hq comments: we will issue a t/n and s/b regarding this subject. thefollowing will be changed. 1) reverse reference balloons 334 and 338.2) add screw (p/n
SONY	KV2675R	No vip, leaky d-103	No vip. noise on m2 data line pin 28 ic103 a board.voltage approx. 4.5vdc. when checking m2 line at pin 14 of ic050 tboard could see a faint horizontal pulse.
SONY	MTL10	Repack kit	Approx. 3 months after installation of mtl repack kit(t-998-025-81), ic became defective. only way to get new ic is to consumeentire new repack kit.
SONY	KV1992R	Intermittent remote, corroded plug on remote module	Many complaints on kv-1970, -1971 and -1992 with intermittentremote function.
SONY	WM10	Wrong battery lid	Two different type battery lids produced for wm-f10 may besame problem as wm-f10 technical news a-0062 feb 15, 1985. -hq comments: although both lids are different in color of the sidewall, they are physically compatible and are registered as the samepa
SONY	KV2670R	Cable interference, suggest 220 mhz trap use	Tv on cable. vertical bars channels, k thru w. per the cablecompany, there is a pilot signal at channel j (220mhz). i have not beenable to get a trap at this frequency (220mhz). -hq comments: please try microwave filter company. the address is6743 k
SONY	XR65	Fm drift	Fm would come in with stereo indicator lit when unit was firstturned on. after about 20 minutes stereo led would go out. slightlyadjusting rv4 would turn indicator back on for a short time before itdrifted again. found that by hitting c48 with freeze
SONY	STRVX5	Erratic display and control operation	From a cold start up unit would have no display and all func-tion leds would be lit. after several mins. of being on, display wouldlight, function leds would go out and unit would work and not act up.
SONY	CDP302	Intermittent problem of reading toc	Unit, intermittently, would not read toc. disc motor spinswide open then stops. at other times unit would perform with no problems.
SONY	KV2670R	Bend at top of picture	Bending at the top of the picture. the bending changes wheneither the brightness or picture adjustments are performed. things thathave been tried so far but have not fixed the problem: c532, c534, c547,c548, c229 and pct t503. -hq comments: disable t