Philips Repair Tips
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Results: 14233
Results: 14233
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| PHILIPS |
GR2.2
|
E/w failure. amplitude changes with contrast (breathing) | For 25/28 inch black line sets: replace c2526 on crt panel by 10n - 400v - 4822 121 42004 for 25/28 inch black matrix sets: replace c2526 on crt panel by 4n7 - 400v - 4822 121 41761 change pos. 2366 on main panel to 10uf (4822 124 40435) remarks : t | ||
| PHILIPS |
GR2.2
|
Does not start from cold situation. | Replace resistors r3610 (15b). r3624 (330k) and r3625 (560k r3624 330k 1w 5% tol 4822 053 10334 r3625 560k 0.5w 5% tol 4822 053 21564 r3610 (4822 050 25601) 10r (safety) 4822 052 10109 add resistor of 560r in parallel with c2660 4822 050 25601 in | ||
| PHILIPS |
GR2.2
|
Does not oparate after replacement of software u274 by u275. | The old software u274 has been replaced by an updated version 275 (4822 209 33297). if this new version is put into the set the following components should be checked/modified as well: delete r3754 (15k) add r3750 27k (4822 051 10273) add these notes to y | ||
| PHILIPS |
GR2.2
|
Distorted nicam sound, fm sound perfect. | Set not dropping out of nicam mode. measure the audio signal on pin 1 of ic7180/7170. if the waveform is distorted (it should be 2 volts p/p). check dac ic 7168 - tda1543 (4822 209 73236). | ||
| PHILIPS |
GR2.2
|
Dead with st/by led flashing | C2456 1µ 16v leaky - pin 16 tda2579 | ||
| PHILIPS |
GR2.2
|
Dead with st/by led flashing | 140v present across c2631 with scan coil pl removed; no line drive from ic7470 tda2579b pin 11 - chip faulty | ||
| PHILIPS |
GR2.2
|
Dead - went off with a crack | Loptr bu508af s/c - no reason for its demise could be found but when replaced, loptx arced destroying loptr again - loptx & loptr replaced | ||
| PHILIPS |
GR2.2
|
Dead - protection cutting in | To disable, lift r3637 from tda8385 psu chip. this revealed e-w fault - prot 1531 o/c. when run on test loptx arced so had to be replaced also | ||
| PHILIPS |
GR2.2
|
Crack noise. | Replace on mono sound module: a. position number 3052 by 470r (4822 051 10822) position number 3056 by 470r (4822 051 10471) in case of pal-bg/secam-dk or pal-bg/secam-li sets. b. position number 3052 by 560r (4822 051 10561) position number 3056 by 47 | ||
| PHILIPS |
GR2.2
|
Crack noise and interlace rattle. | Replace coil 5035 on the if-module by 4822 157 63077. realign s5035 to have a good picture and sound. | ||
| PHILIPS |
GR2.2
|
Corrections to service manual | Corrections to service manual service manual position old code new code gr2.2 aa 1043(tps6.0mb) 4822 242 71841 4822 153 30025 (4822 727 19063) 1103(sft6.0ma) 4822 242 71841 4 | ||
| PHILIPS |
GR2.2
|
Corrections on product survey yearbook 1993: | Corrections on product survey yearbook 1993: styling 19: 3 4822 430 50921 cabinet 28" 4822 131 20483 picture tube a51eal55x73 | ||
| PHILIPS |
GR2.2
|
Correction to service manual | Correction to service manual the circuit diagram of the picture tube base panel shown on page 6.27 of the gr2.2aa service manual is incorrect diodes 6301, 6331 and 6361 are shown with cathodes connected to the emitters of 7304/7305, 7334/7335 and 7364/73 | ||
| PHILIPS |
GR2.2
|
Child lock enable/disable | Press "menu" button on remote control. when the menu appears on the screen select "special features". within "special features", the "child lock" can be enabled or disabled. | ||
| PHILIPS |
GR2.2
|
Change of luminance on some pictures on mono sets. | Replace capacitor 2011 on the if sound module by 4822 124 80056 (47uf-16v). remark :week 9212 introduced in production. | ||
| PHILIPS |
GR2.2
|
Certain effect on the left with rgb-signals. | Bend cable (m27 to m12) away from lot. remark : week 9212 introduced in production. | ||
| PHILIPS |
GR2.2
|
But12af keeps blowing every so often | Check mains res cap 220µ 385v for loose rivets | ||
| PHILIPS |
GR2.2
|
Black picture with unsynchronised teletext bars | Measure on pin 47 ic7800 (saa5246); if period time is smaller then 1 micro second, replace crystal 1800 (4822 242 81191). | ||
| PHILIPS |
GR2.2
|
Black picture in teletext mode | Measure on pin 8 ic7800(saa5246): if the dc voltage of the videosignal is not 1,8 volt, then replace ic7800 (4822 209 31214). | ||
| PHILIPS |
GR2.2
|
Bad vertical linearity for 110 degree crt. | A. for mini/narrow neck and black line sets:r3506 becomes 130k (4822 116 52242) b. for black matrix sets: r3506 becomes 150k (4822 116 52245) c2506 becomes 680uf (4822 124 80063) r3471 becomes 75k (4822 116 52301) c.all sets: c2509 becomes 1uf (482 |