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Make	Model	Symptom	Problem
SONY	KV1711	No picture	This unit had excessive hum and low b+. it was evident thateither the main filter was bad or the regulator was not working. itbecame obvious that the regulator was not working. careful examinationfound r604 open, although it was not burnt. i have see
SONY	KV1547R	No low vhf	Inspection revealed that vc voltage to tuner would not vary.voltage at pin 22, ic005 was always 4vdc, should be 2.1vdc, with nosignal and set tuned in to vhf low. r074 was not soldered on one end.
SONY	KV1547R	Delay in turn on, short ic001/pins 17 & 18	I noticed that it took 4 seconds for set to come on. also,when first turned on, response light would not illuminate. collector ofq010 always had a dc level on it and a noisy square wave. pulses werealways present at pin 18, ic001. further inspection
SONY	KV1543R	Incorrect tuning operation, open ground d039/r055	When set was turned on, it was locked into address position aand would not tune out of this position. any movement of m2 board wouldclear the problem. i then noticed the junction of d039 and r055 which aregrounded at a common point of the pc board, was
SONY	KV1513	Dead	This unit kills this if ic after 3 days. replacing ic andinstalling a diode on the vcc of ic, figuring spike entering the part,with no luck. when ic was bad, no sound and picture just snow. voltageson agc pins are all wrong, but when new ic was put in
SONY	KV1204	No raster, replaced flyback	No raster or lack of width with flashing lines. after setis on for about 10 to 15 minutes the flyback transformer became hot. part# 1-439-185-00.
SONY	KP5040	Test signal interference, r3383 and r3384 connection change	I have two kp-5040s with cross-hatch interference on weaksignal stations - cures suggested in fprs have not helped. if i liftr3383 and r3384 from the 12 volt line and jump them to pin 2 of connectorba-9, and thereby remove voltage from the horizontal cr
SONY	KX2501	High pitch squeal, replaced t654	When the unit would warm up there was a high pitch squeal.
SONY	KX2501	Intermittent horizontal sync, replaced ic501	After set got warm about 5 minutes, pix would lose horizontalsync. cooling the ic501 would correct problem.
SONY	KX2501	Poor picture, replaced ic103	Customer complained of dim picture and excessive audio level.
SONY	KV9200	Parts information missing	I need assistance with the above unit. it seems that thecircuit was modified or changed during production and this was not shownon the s/m or the two existing supplements. this particular set has adiode d402 and q410, q411 added to the base of q402.
SONY	KV2650R	Set would not get some channels, replace ic001	Set would not get channels 2,3,7,8 on cable. changed ic001.set would then pick up missing channels, but was missing others. ic waschanged again and would pick up all but channel 13. set was delivered tohome and would receive all channels but 3. set r
SONY	KV2648R	Shut down, relay contacts	Set comes on and immediately shuts down with loss of b+.found relay contacts spaced too far apart. therefore there was no wipingaction to the contacts at all. i have also found this problem onnumerous other sets.
SONY	KV2648R	Dead, replace q602 and r616	Set came in dead. found convertor q602 shorted and resistorr616 open.
SONY	KV2647R	Picture draw up and v jitter, c508 reversed	Picture would draw up from the bottom and vertical jitter.
SONY	KV2647R	Set on/off repeatedly, open r-143	When ac cord is plugged in, the unit turns itself on and offrepeatedly. if the plug to socket labelled mf-5 was disconnected, theset stayed on and would not turn off at all. with this connector removed,there was no dc voltage at pin 21 of ic101 and yet
SONY	KV2145R	Shut down, leaky q881	Set would shut off once or twice a week. problem wasisolated to hi-voltage shut down crt. found q881 leaky. with a newtransistor shut down voltage increased by 112v, changed dividerresistor for correct voltage.
SONY	KV1948R	Color distortion, color killer adj	While watching old b/w movies, the customer is unhappy withcolor confetti which flashes through picture. -hq comments: we were able to eliminate color confetti problem in ourlab set (kv1547r) by adjusting color killer level using the followingvoltage di
SONY	KV1946R	Incorrect tuning operation, open l508	Tuning ok, but would not hold channels in memory.
SONY	KV1923	Sound distortion, replaced ic cx760	Sound becomes garbled as volume is increased.