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
PhilipsMD2.21EGreek characters in Teletext.Change software into the following version: Non EPG sets: V_3104 317 00860; 4822 900 11102 EPG sets : V_3104 317 00890; 4822 900 11058 -/58 sets : V_3104 317 00870; 4822 900 11066 REMARKS : Introduced in production from week 9737 onwards.14-09-04
PhilipsMD2.21EHorizontal (colour or black/white) stripesCheck the connector (O55) of the combfilter. Resolder on the small signal panel but also at the comb-filter PCB. 14-09-04

PhilipsMD2.21EHorizontal lines in pictureCheck pins of connector J13 on the DDP. Look for badly soldered (oxidated) pins. Resolder pins if required. REMARKS : Improved connectors introduced in production from week 9742 onwards. 14-09-04
PhilipsMD2.21EHorizontal stripes in picture on high volume or ticking against setCheck pins on connector O55 on the combfilter panel. Look for badly soldered (oxidated) pins. Resolder pins if required. REMARKS : Improved connectors introduced in production from week 9742 onwards. 14-09-04
PhilipsMD2.21EHow to access "Customer Service Mode"Press "mute" (on Remote Control) and "menu" on the TV-set at the same time for 4 seconds. On screen a survey will be given with the status of the various settings of the current transmittor. 14-09-04
PhilipsMD2.21EHow to enable/disable "Child Lock"Press "MENU" button on Remote Control. When the menu appears on the screen, you select "FEATURES" (this expression is language dependent) Within "FEATURES", the "CHILD LOCK" can be enabled or disabled.14-09-04
PhilipsMD2.21EInfluence from wireless dolby on channel 3Cause: The wireless dolby transmitter influences the 55.25 MHz on channel 3. The local oscillator from the tuner interferes with the wireless dolby transmitter frequency and this results in a cross pattern on channel 3 (55.25 MHz). Solution: - Add on pos14-09-04
PhilipsMD2.21EInterference from VCR visible in picture- Respect the distance of 20cm as mentioned in the DFU of the VCR. - Use a special antenna cable: 4822 321 61224 or 4822 320 11091 for PA 4822 321 61226 for SECAM REMARKS : IRIS symptom code 134X14-09-04
PhilipsMD2.21EIntermittent no audioCheck 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
PhilipsMD2.21EIntermittent no pictureCheck 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
PhilipsMD2.21EIntermittent no pictureCheck pins of connector O55 on the Combfilter panel. Look for badly soldered (oxidated) pins. Resolder pins if required. REMARKS : Improved connectors introduced in production from week 9742 onwards. 14-09-04
PhilipsMD2.21EIntermittent 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
PhilipsMD2.21EInterruption of MOSAIC mode when using decoders connected to externalWhen the set is in MOSAIC mode and the preset from the decoder appears on the screen (eg. CANAL+), the MOSAIC mode is interrupted and the set switches back to the last preset before switching on the MOSAIC mode. This problem is caused by a wrong setting14-09-04
PhilipsMD2.21EIntroduction of DNR; Removal of Multi-PIPIntroduction of DNR; Removal of Multi-PIP ----------------------------------------- During production Automatic DNR has been introduced in the MD2.2xE sets. At the same time the Multi-PIP function has been removed because these 2 functions can not be avai14-09-04
PhilipsMD2.21ENew service software for the MD2.2x setsNew service software for the MD2.2x sets ---------------------------------------- From week 9816 onwards new software is availeble for the MD2.x sets. This software is only available for service. The differences between the old software and the new one i14-09-04
PhilipsMD2.21ENo mosaic function availableIn the newer 4/3 sets the mosaic function is not available anymore. Instead of the mosaic menu, the auto-DNR function is added. Those sets are supplied with an Instruction for use according to the new status of featuring. There are no changes in type or 14-09-04
PhilipsMD2.21ENo or slow reaction to RC / Not to standbySlow response due to problems with I2C communication. Check pin 12 of connector I46 on the Audio Module (SCL line). Look fo a badly soldered (oxidated) pin 12. Resolder pin 12 if required.14-09-04
PhilipsMD2.21ENo picture and no tuningCheck pins of connector O55 on the Combfilter panel. Look for badly soldered (oxidated) pins. Resolder pins if required. REMARKS : Improved connectors introduced in production from week 9742 onwards.14-09-04
PhilipsMD2.21ENo picture, sound OKCheck the "customer service mode": press mute (remote control) and menu (local control) at the same time for 3 seconds. If the PP values are at zero then these values should be changed. 14-09-04
PhilipsMD2.21ENo picture. Sound, menu and TXT are OK.Check pins of connector O55 on the combfilter panel. Look for badly soldered (oxidated) pins. Resolder the pins if required. REMARKS : Improved connectors introduced in production from week 9742 onwards. 14-09-04
PhilipsMD2.21ENo sound in headphone after switching to Canal+When switching from a channel to Canal+, the sound on the headphone disappears. There is still sound in the loudspeakers of the set. After switching to another channel the sound in the headphone comes back again. This problem only occurs when the decoder 14-09-04
PhilipsMD2.21ENo sound, picture OKCheck voltage of pin 2 of IC7761 (TDA2616) on the Large Signal Panel. When this voltage is not correct check and replace if necessary D6754 (BZX79-C18; 4822 130 31024). 14-09-04

PhilipsMD2.21ENo TXT, no menu, no OSDCheck and replace if necessary X-tal position 1201 on the TXT&control panel (27MHz; 4822 242 81191). 14-09-04
PhilipsMD2.21ENoise (humming or low frequency whistle) coming from the picture tubeMount a bleeder (HT capacitor) between the LOT and the picture tube. This bleeder is supplied as a service kit (4822 310 11113) and include all material and an instruction note. REMARKS :IRIS symptom code 214514-09-04
PhilipsMD2.21ENoise (humming or low frequency whistle) coming from the picture tubeMount 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 ACC is 4822 390 10166. The ACC is supplied with complete instructions how to apply. REMARKS 14-09-04
PhilipsMD2.21ENoise from power supply transformerAdd a capacitor of 100pF (4822 121 51288) in parallel to position 2531 (1nF) on the Large Signal Panel. REMARKS : IRIS symptom code 114414-09-04
PhilipsMD2.21EPicture distortions on canal+ and FR2Change resistor R3141 on the IF module into 180 ohm (4822 117 11448).14-09-04
PhilipsMD2.21EPicture rotated in 28" WS setsThe following service solution can be applied to solve the rotation problem: 1. Add the North/South panel: 4822 212 11287 2. Mount rotation coil on the picture tube neck: 4822 157 70615 and connect it to the free connector (Y90) on the North/South pa14-09-04
PhilipsMD2.21ES1, S2 and S3 channels unselectableS1, S2 and S3 channels are unselectable in channel mode. Replace position 7202 on the TXT & control module with: 4822 900 11102 Software for non EPG sets 4822 900 11066 Software for -/58 sets 4822 900 11058 Software for EPG sets REMARKS : IRI14-09-04
PhilipsMD2.21ESeagull effect in the top of the screenAdd North South panel 4822 212 11564 on position L91 of the LSP. Remove bridge wire 9621. Add bridge wires 9431, 9442 and 9443. REMARKS : This is only a service solution and will not be implemented in production.14-09-04
 FB -  Links -  Info / Contacts -  Forum -   Last SM download :

script execution: 0.26 s