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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 58
Dynatron267475SK K40Takes long time to come on (20 - 30 secs) & no chan nosReplaced T7123 BC368, T7122 BC369, T7182, T7150, T7162 all BC547, & Chopper tr BU508V & check C2128 100µ & elects in psu pri14-09-04
PhilipsK40Blank raster - no sound or vision.C2115 ( 33nf ) leaky.14-09-04

PhilipsK40BLANK RASTER PIN 16 TDA2541 LOW ( NOT 5.2v ) OR PIIF PIN 16 LOW C2115 IF 1 LOW CAPACITOR ON PIN 2 22nF14-09-04
PhilipsK40Blank screen - sound ok (Field collapse)3186 1R5 o/c, 2171/2175 1µ 63v caps (rh edge of sigs pcb)14-09-04
PhilipsK40Blowing line transistor.C2161/2163 , drys on line drive transformer.14-09-04
PhilipsK40Bright pic on LH side with vert linesC2124 15µ 40v in IF can14-09-04
PhilipsK40BU508 LOP SC. , POWER SUPPLY WHISTLING , OVERVOLTAGCNX62 OPTOCOUPLER14-09-04
PhilipsK40Dark picture - contrast control inoperative.Tr7116 ( BC558B ) on text interface PCB s/c.14-09-04
PhilipsK40DeadCHECK R3192 680ohm14-09-04
PhilipsK40Dead - HT 140v ok at LOPTrNo line osc o/p from TDA3576B - chip u/s14-09-04
PhilipsK40Dead - Int.Drys on pin 15 of LOPTX.14-09-04
PhilipsK40Dead - LOPTr s/cDry joints LOPTx14-09-04
PhilipsK40Dead - no line drive.R3192 o/c if patterning afterwards check R3191 for o/c.14-09-04
PhilipsK40Dead.IC TDA3576B and check for drys on coil L5157.14-09-04
PhilipsK40Dead.Drys on LOPTX , R3166 ( 1.5k ) , R3192 ( 680R ) on PCB 1001.14-09-04
PhilipsK40Display - shows 88 - no results.IC7101 ( u CMSM8050 )14-09-04
PhilipsK40DIST PIC , HUM BARC2128 100mfd 50v14-09-04
PhilipsK40E/W DISTCHECK R3177 ( 1ohm ) , C2164 0.02mfd , 250v14-09-04
PhilipsK40E/W fault3177 (12ohm) and 3170 (2k2) were both open circuit14-09-04
PhilipsK40East west - problems.R3177 ( 12R ) o/c.14-09-04
PhilipsK40Field collapseTDA3650 & 100µ boost cap in field stage14-09-04
PhilipsK40Flyback lines creeping down screen.Change 100u f.14-09-04

PhilipsK40Frame collapse.Dry or o/c on LOPTX pin 18.14-09-04
PhilipsK40Gain poor with ringing.Drys in IF , tweak L5137.14-09-04
PhilipsK40Int blank raster (int field collapse)D6107 field fback boost diode int o/c14-09-04
PhilipsK40Int blank screen & soundCame right when chassis hinged down, Connector M13 screened cables shorting vid signal14-09-04
PhilipsK40Int deadDry joints chopper tfmr14-09-04
PhilipsK40Int deadDry joints C216514-09-04
PhilipsK40LINE JITTERC2195 1u 63v14-09-04
PhilipsK40Line tearing at topC2195 1µ 63v14-09-04
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