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Philips Repair Tips




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Search: philips
Results: 14248
Make Model Symptom Problem Solution By
PHILIPS GR2.1
The nicam option remains on. Symptom occurs after switching nicam on and then off and leave by stand by. to avoid that the nicam option remains on you have to change an other option at the same time. e.g. change uhf only to off and again to on then the nicam remains off after saving.
PHILIPS GR2.1
Survey of codenumbers crt gr2.1, gr2.2 aa/ab. Survey of codenumbers crt gr2.1, gr2.2 aa/ab. for your info the code numbers of the crt. this info can be used to complete your si 92.02. (4822 727 19535). a51 eam 31x45 21" mini neck 4822 131 20324 a51 eal 55x73 21" narrow neck 4822 131 20483 a59
PHILIPS GR2.1
Spot on screen when switching off, possibly burnt in crt Replace c2450 by 100 uf (4822 124 80059) on the chassis. replace on crt-panel c2433 by 680 pf (4822 126 12269). desolder r3432 on the crt-panel and make a shortcircuit on this position. remove jumper between c2432 and t7345, solder r3432 between collec
PHILIPS GR2.1
Sound rattle when white pattern and on some cable networks. Replace coil 5035 on the if module by 4822 157 63077. realign s5035 to have a good picture and sound.
PHILIPS GR2.1
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 GR2.1
Set is humming. Hum is caused be a bended coil 5605 touching the sops heatsink. bend the coil to avoid touching of the heatsink.
PHILIPS GR2.1
Set does not start up from standby The following change has been introduced in production : position old new code no. r3663 4k7 5k6 4822 051 10562 r3674 1k1 1k 4822 050 11002 d66
PHILIPS GR2.1
Set can only be operated with remote control Check whether "child lock" is disabled. to check this, see "frequently asked questions", "how to disable child lock".
PHILIPS GR2.1
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 GR2.1
Revised picture tube drive adjustments in service Revised picture tube drive adjustments in service manual gr2.1. the electrical adjustments 1.13, 1.14 and 1.15 on page 7.1 of the gr2.1 chassis service manual 4822 727 18334 have been revised as follows: 1.13 white balance put the tv into the service
PHILIPS GR2.1
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 GR2.1
Picture mutes every 6 sec., in sets with memory protection panels Remove c2721.
PHILIPS GR2.1
Picture disappears, no sound Flat cable to horizontal deflection coil is too close to rgb flat cable to picture tube base board.
PHILIPS GR2.1
No start voltage on pin 7 and 8 of ic7600 Voltages should be 2,95v on pin 7 and 14,8v on pin 8 when starting up.check or replace r3624 (330 kΩ) and r3625 (560Ω).
PHILIPS GR2.1
No sound, no functions and no picture. On firstly checking the power supply this proved to be ok. on then checking the power on reset circuit, this was identified to be fault. replacing d6665 (4.7v zener; 4822 130 80883) and t7663 (bc858; 4822 130 42513) restored operation.
PHILIPS GR2.1
No sound when the set is warm, led blinks Defective ic7309 (tda4680; 4822 209 31592) blocks iic bus.
PHILIPS GR2.1
Mr4 to mr5 software change Mr4 to mr5 software change. after changing a microprocessor with mr4 software by a version with mr5 software it is recommendable to check the option, white balans and peak white limit values. some values may be overwritten.
PHILIPS GR2.1
Moire in picture. Instead of changing the tuner uv916/uv917, add a electrolytic capacitor of 10 uf 25v between pin 12 and pin 16 of the tuner. remarks :1. the capacitor is introduced in production from week 9130 onwards. 2. when changing the electrolytic capacitor c2646
PHILIPS GR2.1
Modification Modification east-west circuit has been changed to lower the voltage in transistor 7533 at the moment of switch off. the values of the following components have been changed in production: r3526 to 47k (4822 051 10473). c2526 to 10nf (4822 122 32442).
PHILIPS GR2.1
List of the microprocessors used in gr2.1 List of the microprocessors used in gr2.1 dev. code: vsl2-4.1 supply code: u111 description: mono (eng,fin,dan,swe,nor,spa) crystal: 4.19 service code: 4822 209 63947