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TV Repair Tips

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Size Model Chassis Symptom Problem Description Fix
2727AS100 PowerSet shuts down at turn onD502, R510
2727AS100 PowerDeadD759, Q752
2727AS100 PowerNo powerIC701, D705, D706. D707, D754, D759, also install kit (#BQC-25AM100-1)
2727DVS100 AudioAudio level is low then becomes worse and distortedReplace tuner TU1951 (this is a two tuner set)
2727F-S50  Tuner tuner drifts, A/V inputs work Replace tuner
2727FS40 PowerDead, fuse blownIC501 (Vert IC), Q602 (HOT), D502 (ECG552), C508 (100uF/35V)
2727LS180  Power Dead, blew Fuse D713 and fuse
2727NL20 PowerTV won't turn offC2705 (470uF/16V)
2727RV79  Power Dead Q1501
2727RV79  No Video No raster, No audio, no vert R2504 (1ohm/1W)
2727RV79  PowerDead setQ1501 (2SC945Q), D2708 (1SS119 or NTE519)
2732LS400  Shutdown Goes into shutdown Resolder flyback pins
27CL27S18  Power Dead D717 (near IC703)
27CL27S18 Powershuts downresolder C517 and flyback transformer
27CL27S18 Powerset shuts down after a few secondsIC751 (9V regulator)
27LC26D6U AudioNo audio, or intermittent soundAdd insulation pad, ( #PSPAZA663WJKZ ) on the foil side of IC2502 between the PWB and the heat sink.
27LC27D42UzzPowerDeadD7907 (zener 150V/5W)
3232KS400zzPowerturns on, then shuts downD510 (ECG116)
3232SF630 VideoNo picture, no horizontal deflectionC631 (.51uF/250V)
3232U-S50  Video No color C812 (coupling cap)
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Warning

: Don't kill yourself.  If you do, don't blame us...  We totally warned you.  These tips are intended for qualified service technicians that know what they're doing.  Unqualified persons should never service their own equipment.  Televisions contain very high voltage that could kill you.