Philips Repair Tips

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Make	Model	Symptom	Problem
PHILIPS	MD2.21E	Extension cables	Extension cables ---------------- service extension cables 4822 310 10674 can be used for servicing lsp and also for the feature box.
PHILIPS	MD2.21E	Does not start, during 15 sec. green led on, then red led on.	Replace software ic7202 on txt/control panel codenr.: 4822 900 11058 and 4822 900 11066 for /58 sets.
PHILIPS	MD2.21E	Distortion in top of picture	Check 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.
PHILIPS	MD2.21E	Digital picture when dynamic contrast is on.	Check and replace if necessary ai panel. ai s/l 4822 212 11202 ai s/p 4822 212 11161 ai s/l/p 4822 212 11203 ai p 4822 212 11162 ai l 4822 212 11378 ai s/l/p palplus 4822 212 11205 ai s/p palplus 4822 212 11209
PHILIPS	MD2.21E	Curtain 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) po
PHILIPS	MD2.21E	Crackling noise coming from the picture tube during program switching	Service solution; change the picture tube into 4822 131 11279 remarks :iris symptom code 2145
PHILIPS	MD2.21E	Crackling noise coming from the picture tube	Crackling 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 ac
PHILIPS	MD2.21E	Correction to the md2.21e/md2.22e/md2.23e service	Correction to the md2.21e/md2.22e/md2.23e service manual -------------------------------------------------------- the code number of the line repair kit as mentioned on page 67 of the service manual md2.21e/md2.22e/md2.23e aa is not correct. the correct c
PHILIPS	MD2.21E	Correction to styling 130 of product survey 1997-4	Correction 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 d
PHILIPS	MD2.21E	Control knobs of sets with top control does not work	Check the soldering of connector b45 of the top control panel (w or x) if required resolder the pins of this connector and relief connector b45.
PHILIPS	MD2.21E	Coloured circles in picture after switching on	Replace on the lsp the following components: - r3502 from 10Ω into 2.2Ω (4822 052 11228) - r3531 from 2k2 into 4k7 (4822 116 52283) - c2513 from 100nf into 10uf (4822 124 41579) mounted with the - to the base of t7514 remarks : introduce
PHILIPS	MD2.21E	Colour shift of negative colours	During program changing or with start-up from standby it is possible that the situation of colour shift of negative colours appears. this phenomenon only disappears after switching off and on and is difficult to reproduce. solution: change position 7505 o
PHILIPS	MD2.21E	Codenumber information	Codenumber information ---------------------- codenumber software ic7202 on txt control panel sets without full epg (nextview) is 4822 900 11102 sets with epg (nextview) is 4822 900 11058 /58 sets with east europe language cluster is 4822 900 11066
PHILIPS	MD2.21E	Code number of the cabinet of the 28pt7103/12	Code number of the cabinet of the 28pt7103/12 --------------------------------------------- the code number of the cabinet of the 28pt7103/12 is not mentioned in styling 129 of product survey 1997-3 and 4. the code number for this cabinet is 4822 449 8013
PHILIPS	MD2.21E	Code number of position 7207 of the txt-control pa	Code 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.
PHILIPS	MD2.21E	Change in osd function	Change in osd function ---------------------- during production the osd function of the md2.2xe sets has been changed with the introduction of new software. the old situation was that by pressing the osd button for 5 seconds it was possible to change bet
PHILIPS	MD2.21E	Blinking 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.
PHILIPS	MD2.21E	Bad start behaviour, on and st.by led flashing	Change 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.
PHILIPS	MD2.21E	Background noise audible in the wireless surround speakers	Change on the receiver module in the active surroud loudspeaker the following components: - delete position 3731 - add position 3729 (4k7; 4822 051 20472) - change position 3730 into 4k7 (4822 051 20472) remarks : iris symptom code 1542
PHILIPS	MD2.21E	Audio supply repair kit md2.2	Audio supply repair kit md2.2 ----------------------------- for service now there is an audio supply repair kit available. this repair kit can be ordered with codenumber 4822 310 11086.