datasheet,schematic,electronic components, service manual,repairs,tv,monitor,service menu,pcb design
Schematics 4 Free
Service manuals, schematics, documentation, programs, electronics, hobby ....


registersend pass
Bulgarian - schematics repairs service manuals SearchBrowseUploadWanted

DatasheetsChassis2modelRepair tipsFulltext searchCables & Connectors
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
PhilipsMD1.1EVolume adjustment in only in 4 levels.IC7353 (MSP3400; 4822 209 90562) (MSP3410; 4822 209 90563)14-09-04
PhilipsMD1.1EWhite bars in pictureAdd 2K7 resistor to item 5421 (coil). Service code number is 4822 117 11433. REMARKS :Above mentioned modification is already implemented in sets with QGxx9546 or higher.14-09-04

PhilipsMD1.1EWhite measure line (monitor puls) in bottom part of picture.Check/replace R3464 by 1 Ohm (4822 052 11108).14-09-04
PhilipsMD1.1EWrong colour and geometry.Adjust geometry and alignment options in the Service Alignment Mode. Replace EEPROM (IC7685; 24W04C1; 4822 209 90962) if necessary.14-09-04
PhilipsMD1.1E 25PT4521/25Dead after burning smellMains switch - seem to be a potential fire risk14-09-04
PhilipsMD1.2Audio missing except from headphonesFaulty Tr7601 sm transistor causing mute cct to operate14-09-04
PhilipsMD1.2Dead - held in prot mode with no line dr & low HTMicro faulty, also EEPROM corrupt, POR Tr & 4v7 zener s/c, LOPTx faulty14-09-04
PhilipsMD1.2e/w bowing in 4:3 pic - double image & line tearing in Super Zoom - lopt whiningIC7119 on small sigs board - check for dry joints at connector S1114-09-04
PhilipsMD1.2interference when disturbedCTI panel dry joint edge conn14-09-04
PhilipsMD1.2 28PW6322Poor pic with fly back lines, R3329 on tube base getting hot.CRT faulty14-09-04
PhilipsMD1.2 Ered flyback lines ,visible in black partspcb under line transformer broken 14-09-04
PhilipsMD1.2EBad 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
PhilipsMD1.2EBad 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
PhilipsMD1.2EBlinking 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
PhilipsMD1.2EColour missing with playback of Secam tapeCheck and replace if necessary item 7113 (TDA8395/N2) on the SSP by TDA8395/N3 (4822 209 16032). REMARKS :This is a service solution that is not introduced in production.14-09-04
PhilipsMD1.2EColourspots 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
PhilipsMD1.2ECracks in Nicam soundCheck and replace if necessary item R3002 by a 180 Ohm 1% 0.1W resistor (4822 117 11448). R3002 is located on the Nicam L panel. For MD1.1E AA sets (not applicable for MD1.2E AA and MD1.1E AB) a micro controller that solves the "random change of volume"14-09-04
PhilipsMD1.2EDark picture / wrong coloursCheck soldering of connector W57 (CTI/Black Stretch module) Resolder all pins if required. REMARKS :A solution is introduced in production from week 9801 onwards.14-09-04
PhilipsMD1.2EDead - blows several semis at sw onbridge rect, H8NA60F, MC44603P 10R 0.22R, 220pf cap2kv, 3524 10R, 3525 180k, 6524 BYV10-20 (not 20v zener - fit proper replacement), BA157, STH8NA60FI, STW8NA60, CNX82A, check C254014-09-04
PhilipsMD1.2Edead - mains switch faultyreplace switch with improved type (coloured black). Use old part no, Philips will supply a new type14-09-04
PhilipsMD1.2EDead, FET7540 s/c & MC44603P changed - after replacement LED flashed red, yellow & greenLOPTx faulty tho' checks ok on tester14-09-04
PhilipsMD1.2EDead, no LEDs & burning smellC2568 330nF 1kv s/c14-09-04

PhilipsMD1.2EEasy way to check the Power SupplyEasy way to check the Power Supply---------------------------------- The MC44603 can be checked for basic operation without the set being connected to the Mains supply. Method: 1) Discharge the 300V smoothing Capacitor. 2) Connect a BYD33D Diode to p14-09-04
PhilipsMD1.2EHow to enable/disable "Child Lock"Select "FEATURES" (this expression is language dependent) menu on Remote Control. Within "FEATURES", the "CHILD LOCK" can be enabled or disabled.14-09-04
PhilipsMD1.2EInterference in picture on 182, 217, 238 and 495 MHz1. Use high quality antenna cables and connectors (in case of insufficient result, apply solution 2) 2. Add 3 SMD capacitors (parallel) on pos 2391 audio-module. 470pF; 5322 122 32268 220pF; 4822 122 31173 and 1,5pf; 5322.126.10225 14-09-04
PhilipsMD1.2EInterference on VHF3 (175-225MHz)Use good (double screened) coax to and in the neighbourhood of the TV- set. Do not use open (unscreened) coax connectors.14-09-04
PhilipsMD1.2EIntermittent no picture and/or soundCheck 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
PhilipsMD1.2EMD1.2E LOT SURVEYMD1.2E LOT SURVEY SET TYPE SERVICE CODE NUMBER REMARK 20" WIDESCREEN 4822 146 10367 21" BM 4822 140 10595 *) 24" WIDESCREEN 4822 140 10584 25" SF " 14-09-04
PhilipsMD1.2EMoire in picture on certain channels (Ch6, Ch11, Ch24 and S12)Depending on the severity of the problem, a 3 phase solution is available. If the problem is not sufficiently solved by step 1, continue with 2, etc. 1. Use a high quality antenna cable 2. Add 3 SMD capacitors (in parallel) on position 2391 (Audio Mo14-09-04
PhilipsMD1.2ENew lay-out of CRT panelsNew lay-out of CRT panels Only for: All 25 (EXC. TESLA), 28 (EXC. WS) AND 29 (WITHOUT SCAVEM) For the following MD1.2E sets, a new CRT lay-out is used: SERVICE CODE CRT type 14-09-04
 FB -  Links -  Info / Contacts -  Forum -   Last SM download :

script execution: 0.26 s