Philips Repair Tips

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Results: 14233

Make	Model	Symptom	Problem
PHILIPS	GR2.2	Totally dead.	Check and replace r3624 and r3625 in the power supply. codenumbers: r3624 330 kΩ 4822 053 10334, r3625 560 kΩ 4822 053 21564.
PHILIPS	GR2.2	Too little color saturation in cvbs mode	In teletext mode, color saturation is ok. check supply voltage for ic7307. when < 5 volt, replace d6310 (llz-c5v1; 4822 130 80884)
PHILIPS	GR2.2	The width changes up to 2 cm when adjusting contrast	Capacitor 2526 (4822 122 32857) leaks on picture tube panel.
PHILIPS	GR2.2	Teletext panel	Teletext panel early versions of the gr2.2 chassis use the teletext decoder of the gr2.1 ab (4 ic version). from week 9228 the 3 ic version (shown in the gr2.2 aa manual page 6.54) is used. however, the circuit and pcb layout are changed. for details o
PHILIPS	GR2.2	Sound mute on cable networks and with some vcrs.	Cut the copper track from pin 18 of position number 7200 (tda8415) to the "via hole" and solder 8k2 (4822 051 10822) between pin 15 and pin 18 of position number 7200 and solder 4k7 (4822 051 10472).
PHILIPS	GR2.2	Sound mute on cable networks and with some vcrs.	Remove 9202 and place 4k7 (4822 051 10472) between pin 18 and ground of position number 7200 (tda8417) and place 8k2 (4822 051 10822) between pin 15 and 18 of position number 7200.
PHILIPS	GR2.2	Sound mute on cable networks and with some vcrs.	Remove r3064 on stereo if module, replace r3065 by 4k7 (4822 051 10472). add on r3070 8k2 (4822 051 10822).
PHILIPS	GR2.2	Sound mute and searching does not stop	Replace micro ic7708 (4822 209 31212) and ic7470 tda2579b (4822 209 63423) on the chassis.
PHILIPS	GR2.2	Sops moire in the picture	Replace pos.nr. r3450 by 27kΩ (4822 053 11273) on the chassis remarks: introduced in production from week 9438 onwards
PHILIPS	GR2.2	Sometimes no txt. sometimes wrong characters.	Clock 27mhz o.k. replace ic7800 (saa5246ap/ e/s 4822 209 32642). replace x1800 (4822 242 81191)
PHILIPS	GR2.2	Skips vcr channel when tuning	Some cases may occur where a gr2.2 receiver will not capture a vcr test signal during tuning. this is because some vcr test signals do not include complete field and line sync pulses which the receiver requires for ident purposes. the simple answer is t
PHILIPS	GR2.2	Set responds very slow to commands from either rc or local keypad.	Fault suspected to be databus problem. upon removing the teletext pcb normal operation resumed. fault was found to be caused by low +5v on text board, caused by t7872 (4822 130 41344) being open circuit.
PHILIPS	GR2.2	Set dead and sops tripping	This fault was caused by d6646 (4822 130 42488) and c2646 (4822 124 80054) both being short circuit.
PHILIPS	GR2.2	Service mode access	Short pins m43 and m44 on chassis to get into service menu
PHILIPS	GR2.2	Service manual corrections	Service manual corrections the parts lists of gr2 service manuals should be corrected as follows: service manual for 21st2731/05b 4822 727 19403 add control panel code no. 4822 432 10957 service manual for 25st1750/25b 4822 727 19042 item
PHILIPS	GR2.2	Screeching noise then dead - loptr goes s/c	Tda2579b timebase ic
PHILIPS	GR2.2	Red picture is orange.	Check diode d6361 (4822 130 80877; bav103)
PHILIPS	GR2.2	Purple (with secam) or grey bar visible on right side of the screen	Modify r3474 from 3k9 into 6k8 (4822 051 10682) and readjust thehorizontal and vertical amplitude if necessary. remark: this problem is only valid for sets with blackline s picture tube.
PHILIPS	GR2.2	Protection circuit working from time to time	Diode 6592 (ll2c30; 4822 130 80928) leaks. voltage to protection circuit was ca. 400 mv, it should be 28...23 mv.
PHILIPS	GR2.2	Power supply shuts off and plop in speakers.	Check speakers, check ic7240 (tda1521) (4822 209 73853) and fuse 1240/1242 defective (1,6 at, 4822 071 51602).