TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	ICF2001	Repairability of units	Many units have been received with various problems, and dueto the nature of problems and product, have been unrepairable. requestsome form of product training, troubleshooting guide, and/or circuitdescriptions. -hq comments: training was given on this
SONY	TAN77ES	Protection light on	Intermittent protect light.
SONY	CDP110	Inaccurate and missing procedure in section 2 of cdp110 s/m	1. rf pll freq. adj.: serial/parallel tp must be graded forthis procedure to work. 2. no. 6 should read 4.2818mhz instead of4.3218mhz. -hq comments: you are correct. for future cases please refer to thecdp alignment manual that rick heal wrote. page
SONY	KV20XBR	Intermittent	Very intermittent problem. at certain times, the sleep andrgb leds would light only and set would accept no other commands - alsodisplayed no sound or raster. i also noted the absence of high voltagewhen problem occurred. at the time of failure, inspe
SONY	KV2680R	No system control, ic-1303 on "x' board	It was not possible to control any functions, picture andsound were muted. we found ic-1303 to be defective. pin 13 was constant-ly high and did not permit data out of the controller to pass. -hq comments: ic-1303 is quad nand gate associated with ic-
SONY	KV1714	Flyback	Flyback transformer part number 1-439-237-00 is substitutedwith part number 1-439-235-00. according to servicer, the substitute doesnot fit the pc board. -hq comments: flyback part number 1-439-237-00 had not been supplied tomass production. only seve
SONY	XR7150	Erratic function of tape mechanism	Unit will not load intermit., sometimes will not mute while inff/ams/rew, or when reversing tape will jam-reels turn but head & pinchroller do not move back into play. unit will jam and display e-99 error(mech.jam indication). touch/move head pcb-loadi
SONY	D10	Distorted audio	Distorted audio.
SONY	KV27DS20	Open speakers, replace sp	Both speakers open - everything checks good. the flexiblewire from the voice coil to the mounting post is broken. a set ofreplacement speakers was installed and within 30 days the same problemoccured. -hq comments: thank you for your report.
SONY	WMF107	Description for flex connectors	The service manual does not differentiate between the flexconnectors. they are all described as flexible pc board.
SONY	XR7200	Extension cables for servicing	Will a set of extension cables for servicing be made availablefor this unit? -hq comments: we have not been notified that extension cables will beavailable. i will ask tokyo and let you know.
SONY	ITA600	Unreliable 20 pps dialing	20 pps dialing is unreliable.
SONY	ITA500	Unreliable 20 pps dialing	20 pps dialing is unreliable.
SONY	ITK500	Unreliable 20 pps dialing	20 pps dialing is unreliable.
SONY	ITK300	Unreliable 20 pps dialing	20 pps dialing is unreliable.
SONY	CCDSP7	Owners manual correction	There is an error on page 70 of the ccd-sp7 owners manual.the directions for macro are to press the telephoto button all the waywhile pressing the macro button. actually, the wide angle button must bepressed instead of the telephoto.
SONY	KPR46CX10	No picture, replaced ic402	No picture, high voltage ok, abl/protect circuit in protectmode. 12v on collector of q-4441.
SONY	KV2649R	Remote control - turn on only all other functions inoperable	Remote control - turn on only all other functions inoperable.manual control on/off ok all other functions inoperable, plus unit waslock on one channel uhf-25.
SONY	KV27SXR10	Convergence problem, magnets added	When using cross-hatch pattern from ntsc generator, thebottom line looks like this plus top line is like this.
SONY	XR6150	Schematic error	Emitter at q513 is drawn in the schematic as being connectedto ground. on page 13 the emitter of q513 is actually connected to thenext line lower, the anode at d526 and one side of s902 mute switch. thepictorial view of the main board on page 11 and 13