TV Repair: Common Faults and Solutions.

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Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
SONY	CCDV9	No servo lock in playback	Noise bars riding up monitor screen during playback. foundbandpass filters of 16k & 47k would intmtly show correct waveforms andimmediately servo would stabilize. q251 and supportive circuitry whichacts as low pass filter extracting atf from playback r
SONY	STRAV27	Pop in speakers when in tuner mode	When the unit was in tuner mode, there would be a pop heard onthe speakers every so often. all other modes were ok.
SONY	XR6100	No audio on tape function	Tape deck mute switch is engaged all the time. please note the other serial numbers (39354, 38860, 11732, 20270, 38576, 32027, 39025,37745, 49545, 33402, 37112).
SONY	ITA500	Premature shut off of icm
SONY	ITA500	Excessive take-up torque	Extreme wow and flutter on message playback. the take-uptorque is approx. 50g/cm (should be about 5-10g/cm). on this particularunit, it occurred on the icm side. however, i have also seen this problemoccur on the ogm side. it appears there is some oi
SONY	PVM1910	No video on line a or b	No video displayed when inserting video through j002 orj006. found break in etch right at both connectors. unusual for both tobe broken, only explanation they broke while inserting or removing thebnc connectors.
SONY	KV20XBR	No raster	Set would shut down after 3 or 4 seconds. brought up setwith variac, found hi-v protect voltage at the base of q503 too high.found transistor leaky.
SONY	KV27HFR	Shutdown, replace ic-681	Intermittent shutdown after 15 to 20 minutes.
SONY	XR6100	Audio muted on tape function	Tape deck mute switch is engaged all the time.
SONY	STRAV460	Every segment of the display lights at once	Customer complained of intermittently every segment in displaywould light up at turn on. no functions would work. turning on/off wouldclear it up.
SONY	CCDV3	Number '5' screw on r cabinet (item 21)	Number 5 screw on r cabinet, many times is very difficult to be removed due to the glue used. the cabinet may be damaged in the effort to remove the screw.
SONY	SLHF550	Ic001 overheating	Unit would shut down due to erratic 5v output from ic001 inthe power supply. found that the aluminum heat sink for ic001 wasmissing from the unit.
SONY	HVC2800	P/n for bottom frame support for ckt boards	Page 40 of s/m shows frame support below ref. no. 64. i needa part number for this piece. -hq comments: i checked with tokyo and found that this part isunavailable. please try to find a scrap unit.
SONY	XVT600	P/n missing for sl-901 flex board (page 78 in s/m)	S/m shows ref. no. 132, but no p/n. -hq comments: p/n is shown on page 89 (1-621-046-11). a servicebulletin will be issued.
SONY	CCDV8AFU	No part number for iris assembly	Page 156 of service manual shows no part number for irisassembly (including motor). -hq comments: part number is 3-707-176-01, and is also used in bmccamcorders. a service bulletin will be issued.
SONY	ACV33	Availability of unit	Customer would like to purchase this unit. kcp stock shows(see manual or bulletin) on computer. -hq comments: according to the consumer video division, product planninggroup, the ac-v33 will not be available in the usa. it is howeverreplaced by the ac
SONY	SLHF900	Noise in picture	Black dots randomly appearing in different areas of screen.
SONY	XR787R	Ref. numbers reversed; r/n 367 and r/n 370	On page 41 in s/m for xr-787r, ref. #'s 370 and 367 areswitched. p/n for ref. #367 is 3-596-577-01 arm assy, select.p/n for ref. #370 is 3-596-574-01 bracket, switch.
SONY	SLHF1000	High frequency noise in super beta mode	When unit was put in super beta mode, high frequency noisewas displayed on the screen.
SONY	CCDV5	No color on pb (vtr mode)	No color in pb mode. record mode ok.