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PHILIPS Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
PHILIPS GR2
Sound but no pictureCheck the lot cable for short circuit
PHILIPS 21PT166B/00 AA5 AB
No drive to lop transistorMiddle sections checked ok. carefully scoping the tda8361's hor. output showed gnd level to be at +0.8v not enough to drive next stage. change the tda8361
PHILIPS GR2.2AA
Protection circuit operating intermittentlyDiode 6592 was found to have leakage causing voltage to protection circuit to be too high, should be 23 - 28mv
PHILIPS ANUBIS A
Low contrastC2448 47uf, 200v open circuit
PHILIPS 21PT5505/05 L9.1E
The fault with this tv was a snowy picture no channels tuned in also the permanent 33v supply on pin 9 of the tuner was low at only 1.6vThe first thing i tried was a resistance check between pin 9 and ground. the reading was only 120Ω. tsound's a surface mounted cap right next to pin 9 of the tuner. this was found to be leaky, it's value is 47nf. also resistor 3442 3.9k was o/c
PHILIPS 14PT1352/58 L6.1AA
Sound goes off and no remote control functions when heatedThis was found to be due to a faulty micro
PHILIPS CTN-BB
Dead. f1500 o/c, mosfet s/cMosfet t7525 shorts, due to smoother cap c2505 goes low capacity. ic7514 tda4605 must also be replaced
PHILIPS 25PT532A/05 GR2.2
Power supply dead, blowing fuseFault was transistor but124f 7625 short circuit, replaced transistor and also changed ic cnr50 7614 and tda8385 7600 this solved the problem
PHILIPS 25PT512A-05 GR2.2
Dead set ht 140v okReplace standby thermistor thy6670
PHILIPS L9.2E
Fuse 1572 blownDisconnect pin 44 on ic7600, if the fuse stops blowing suspect processor ic7600. it is really expensive, at least in sweden !
PHILIPS GR1AX GR1AX
Will not start up from coldCheck if 95v line increases to over 100v when tr7628 bf423 is chilled. if so, replace d6629 bzx79-c12 and re-check 95v/re-adjust r3625. may also be worthwhile replacing tr7628 and c2629 as a precaution!!
PHILIPS GR2.4AA
Power supply protection enabledReplaced zener diode 6561 bzx79c68
PHILIPS VR110
Power supply trippingDamaged print at one of the pins on primary side of transformer
PHILIPS L6.2
Picture is horizontally narrowed and deformedCapacitor c2913 390nf, 250v on the deflector pcb had lost capacity
PHILIPS 28ML8805-16B FL1.6AA
Power supply faults. bux85f in micro sops defectiveChange the value of c2260 to 4n7f, replace 7270 with transistor bd825
PHILIPS 28ML8805-16B FL1.6AA
Ticking noise and line in pictureTransistor 7381 bc848c defective when hot
PHILIPS 28ML8805-16B FL1.6AA
Disturbed sound in left channelCheck ic7009 lm833 on lsp
PHILIPS 2B 2B
Very low ht voltageThe ht was so low that a 60w lamp connected across the ht line as a dummy load wouldn't even slightly glow. the problem was caused by a wrongly fitted ptc, it was a 96012 type, when the right ptc 96012 was fitted the problem was solved
PHILIPS 28PT4521/16 MD1.1E
Fails to stop at station when tuningR3568 100kΩat side of l10 connector
PHILIPS 28PW6322-05 MD1.2E AA
No picture and no sound and when switching on, the high voltage transformer makes a soundThe capacitor in pos. 2420 was bad it produced smoke after some time