TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	WMD6C	Motor does not turn	The customer told me that he plugged in 12vdc instead of 6v.the amplifier section was fine, but the motor did not turn.
SONY	CFS300	Part number incorrect - ic3	On page 18 and again on page 20, ic3 is stated to be a la4126.on page 29 of the parts list, it is a la4125t. which is correct? theseare not listed in the handbook as being interchangeable. -hq comments: the correct part is la4125t. part # is 8-759-80
SONY	CCDV8	Tape jam	Tape broken and wrapped around top of drum assembly.
SONY	TCFX510R	Replacement of panel and buttons for rec and rec mute	Servicer would like to replace panel and buttons for rec andrec mute however, these buttons are not shown separately on page 35 ofs/m. can we get these or do we have to replace entire front panel assy? -hq comments: the rec and rec mute buttons are par
SONY	BMC110	Units dead	Units doa. after making basic tests, found pin 38 (reset)held at 205 volts. syscon ic301 not able to reset. located leaky capaci-tor c341.
SONY	XR70	Noise on the outputs in tape mode	Every xr-70 i have worked on has a motor noise in tape modethat is noticeable at low or no volume. -hq comments: head amp may be picking up motor noise as they are locatedclose to each other. try a shield around the motor.
SONY	TCFX1010	Communication with asp chip	Always in muted mode. tape plays, meters correct. in recordmode there is no control of level (rec) even though the attenuator reads-70db. ic710/703/704/309 replaced. all power supplies were within 0.3v.
SONY	WM10RV	No auto stop	The unit did not stop or switch the direction automatically.
SONY	WA16	The unit changes direction fwd/rvs by itself	The unit changed the direction rwd/rvs by itself. alsonoticed the take-up and the supply reel did not turn.
SONY	RS20	No outgoing message	When we try to record the outgoing message, it rewindsadvances 33 reel count and seems to record the message. however, when wepush the in/out switch to out in order to monitor the recorded message,the unit makes the error beep.
SONY	WA11	No audio	There was no audio coming out from the speaker.
SONY	RT44	No play	The unit did not play tapes. the take-up reel did not turnand the head base did not go up.
SONY	SRF5	P/n for wrist strap	Wrist strap is listed as an accessory, but no part number isgiven in manual. -hq comments: the wrist strap is a part of the radio holder assy byp/n x-3892-102-0.
SONY	CCDV8	Flashing color stripes across the screen	Playback ok. recording defective, poor solder connection onic104 on vi-6 board.
SONY	D5	Dead	Unit came in dead. voltage out of the regulator read 5.2v.replacing ic802 brought it down to 4.8v. still had problem. when play ispressed, pin 45 goes high (ic801) but pin 2 does not go low, which isshould.
SONY	CCDV8	Tape jammed	Tape jammed.
SONY	ICFC30W	Radio intermittently goes into sleep mode	After unit has been plugged into ac outlet for 5-10 minutes,unit intermittently goes into and out of sleep mode.
SONY	SLHF500	Bar in picture	When put in play pause mode, unit would automatically to go rewind function. also, there is a bar that floats through the video from bottom to top.
SONY	KV2680R	No functions when hot, replaced leaky d-041 on "x" board	After turn on, all remote control functions were inoperative,plus manual controls. also the problem would occur about 2 min afterturn on. heat and cold had no bearing on this unit.
SONY	KV2681	No picture or sound	No picture or sound.