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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 4551
PhilipsMD2.11EStand-by LED flashing after start upErrors 47, and possible 69 are indicated. Solution: on LSP probably HFB signal not present caused of defective R3609, 4k7, 4822 052 10472.14-09-04
PhilipsMD2.11EStereo identification of a mono signal due to noiseChange the set software (pos. 7202 on TXT & control panel) into V_00540 or higher and for -/58 sets into V_00530 or higher. Codenumbers: V_00530 4822 900 10857 V_00540 4822 900 10771 REMARKS :Introduced in production in week 914-09-04

PhilipsMD2.11ESupply hickupping, shortcircuit +141V. No err.Check and replace if necessary L5430. LOT 25"/28" FSQ; 4822 140 10588 LOT 25"/29"/28"/32" SF; 4822 140 10559 LOT 24" SF; 4822 140 10589. Also replace line repair kit MD2 (4822 310 10707).14-09-04
PhilipsMD2.11EThe bottom left side of picture shows a green teletext symbolThe bottom left side of picture shows a green teletext symbol whether or not the teletext is switched on. Subtitling is selected, but the subtitling page is not stored. Switch off the subtitle function by pressing the subtitle knob on the remote contr14-09-04
PhilipsMD2.11EThe bottom left side of picture shows a green teletext symbolThe bottom left side of picture shows a green teletext symbol whether or not the teletext is switched on. Subtitling is selected, but the subtitling page is not stored. Switch off the subtitle function by pressing the subtitle knob on the remote cont14-09-04
PhilipsMD2.11ETotally inoperative. No LEDs. Supply defective.Replace all components of the supply repair kit MD2; 4822 310 10649. 14-09-04
PhilipsMD2.11ETotally inoperative. Red LED flashing. Line circuit defective. Err 4Check and replace if necessary resistor R3415 (2K7; 4822 117 12077) on the LSP.14-09-04
PhilipsMD2.11ETotally inoperative; No LEDs; Supply hickupping. Err. 47Check the connection of L17 (Hor. deflection coil). 14-09-04
PhilipsMD2.11ETXT is horizontally shiftedWhen the TXT decoder SAA5270/..M4 (IC7400) is replaced by SAA5270/..M3, the TXT is slightly shifted. The codenumber for M4 is: SAA5270WP/B/M4A is 4822 209 13642. SAA5270WP/E/M4A is 4822 209 15087. SAA5270WP/F/M4A is 4822 209 15118. SAA5270WP/H/M4A 14-09-04
PhilipsMD2.11EUnstable moving, "waving" pictureCheck on +5 V panel the soldering of C2530. Also check and resolder pin 1,2,3, and 10,11,12 of connector V50 on the LSP.14-09-04
PhilipsMD2.11EVertical lines bendedCheck the connection of the EHT cable inside LOT. 14-09-04
PhilipsMD2.11EWhite picture with flybacklines. Set shuts off. Red LED flashingCheck and replace if necessary IC7350 (TDA6101; 4822 209 91143 and R3373 (10E; 4822 052 10109) on the PTP + SCAVEM panel.14-09-04
PhilipsMD2.11EWrong code number in the service manualWrong code number in the service manual The code number of the SAA7710/N103 (pos. 7600 on the Audio Module) on page 50 of the service manual is wrong. The correct code number is 4822 209 13606. The codenumber and the description of the MSP3410 (pos. 14-09-04
PhilipsMD2.12E"Digital scan" does not appear in the picture menuIn the direction for use is mentioned that in the picture menu the function 'Digital Scan' can be switched off. However during the picture modes; Super Zoom, 14/9, 16/9, subtitles an automatic the function 'Digital Scan' does not appear in the picture me14-09-04
PhilipsMD2.12E+5 V stand-by defective (also fuse 1580 defect)First check the +5 V supply panel before replacing the fuse. When the +5 V panel is defective, it could be that the +5 V becomes too high, which will damage the circuitry.14-09-04
PhilipsMD2.12EAfter a while vertical and horizontal scrolling picture.Check and replace if necessary: IC7505 (software) in the feature box. Software FBX3-F; 4822 900 10982 Software FBX4-Eco; 4822 900 10745.14-09-04
PhilipsMD2.12EBad coloursCheck YUV output signals of IC7441 (TDA8753AN; 4822 209 90528) If necessary replace IC7441.14-09-04
PhilipsMD2.12EBad focus or focus varies in a new set or after CRT replacementPossible solution: Short circuit the focus and the G2 pins of the picture tube with the aquadag coating. Switch the set on for approximately 5 seconds. After this return the set to its original condition. Check if the focus adjusted normally. If not repla14-09-04
PhilipsMD2.12EBad start behaviour, ON and ST.BY LED flashingChange mains input voltage by a variac. When start problem increases with an input voltage that is only about 10% below normal, check or replace the supply optocoupler. With a good optocoupler an avarage set easily starts on 60% of normal mains voltage.14-09-04
PhilipsMD2.12EBlinking LED (set in protection)Set in I2C software protection due to problems with the I2C communication. Check pin 12 of connector I46 on the Audio Module (SCL line). Look for a badly soldered (oxidated) pin 12. Resolder pin 12 if required.14-09-04
PhilipsMD2.12ECode number of position 7207 of the TXT-Control panelCode number of position 7207 of the TXT-Control panel The code number of position 7207 (UM62256EM-55LL) of the control panel is missing in the service manual. The code number is 4822 209 15179.14-09-04
PhilipsMD2.12EColourspots on screen; degaussing defectiveThe circularly pattern consists of a red spot in the middle, surrounded by a green circle, which again is surrounded by a blue circle. This is caused by a defective position 7507 on the LSP. Delete position 7507. Mount jumper 9507 on the LSP14-09-04

PhilipsMD2.12ECorrection Service ManualCorrection Service Manual On page 2 of the service manual the specification of the CVBS status on pin 8 of the euro connectors is wrong. The correct specification should be: 0 - 2V : INT 4,5 - 7V : EXT 16:9 9,5 - 12V : EXT 4:3 REMARKS 14-09-04
PhilipsMD2.12ECorrection to styling 130 of Product Survey 1997-4Correction to styling 130 of Product Survey 1997-4 The description of the code numbers 4822 466 10933 and 4822 466 10934 of position 3 of styling 130 in product survey 1997-4 is not correct. The correct description is; 4822 466 10933 Protection plate 14-09-04
PhilipsMD2.12ECrack in sound with a mono signal with no modulationChange the set software (pos. 7202 on TXT & control panel) into V_00540 or higher and for -/58 sets into V_00530 or higher. Codenumbers: V_00530 4822 900 10857 V_00540 4822 900 10771 REMARKS :Introduced in production in week 9614-09-04
PhilipsMD2.12ECrackling noise coming from the picture tubeCrackling noise coming from the picture tube during light/dark changes of the picture contents. Mount bleeder (4822 310 11113) between LOT and picture tube. If problem still exist Anti Crackling Coating (ACC) can be applied. The code number for this AC14-09-04
PhilipsMD2.12ECurtain effect just after a white vertical line (ringing phenomenon)To reduce the ringing phenomenon change the following positions on the Small Signal Panel: Position 4508 into 1k (4822 051 10102) Position 3537 into 1k (5322 117 12487) Position 3538 into 1k (5322 117 12487) Position 3565 into 1k (4822 051 10102) Po14-09-04
PhilipsMD2.12EDark picture via CVBS Terrestrial. Via SCART picture is OKCheck and replace if necessary C2405 (220nF; 4822 126 13473) on the LSP.14-09-04
PhilipsMD2.12EDigital black points in black and white picture when set is warmed upCheck IC7450 (SAA4970T; 4822 209 33689) on the feature box for temperature dependancy. If necessary replace.14-09-04
PhilipsMD2.12EDoes not function; supply defective.Check and replace if necessary R3505 (1.5 Ohm; 4822 117 12074) on the LSP.14-09-04
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