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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: 138
PhilipsCP9095 volt varying with contrast level.Check/Replace D6665 - 1N4148 (4822 130 33939), R3665 - 4.7 Ohm safety (4822 111 30499).14-09-04
PhilipsCP90Audible hum in standby modeA production change has been introduced increasing the value of C2661 from 33nF to 100nF (code no. 4822 121 41689).14-09-04

PhilipsCP90Blank raster - no sound or response to R/CNo 11.5v at thyristor 6726 in st/by cct as D6733 BAV19 o/c14-09-04
PhilipsCP90Blank raster after fitting new LOPTxC2098 0µ47 or 1µ o/c14-09-04
PhilipsCP90Brightness level change in A/V modeIt is possible that some video equipment will provide a CVBS signal slightly in excess of the 1 volt peak-to-peak level required. This will cause a change in brightness levels when switching between external A/V mode and an RF signal which some viewers m14-09-04
PhilipsCP90Buzz in standby mode.Ty6726 thyristor.14-09-04
PhilipsCP90Buzz on sound.6Mhz ceramic filter kit P No 4822 310 27563.14-09-04
PhilipsCP90Changing tuner.Mod type see Tv Mag.14-09-04
PhilipsCP90CHANNEL DISPLAY SHOWS 3 THEN F1D6695 OC F1690 400Ma OC14-09-04
PhilipsCP90Continuous page header display in subtitleChange text IC to type MAB8461P/W196 part No4822 209 6247914-09-04
PhilipsCP90Contrast - low.No volts on pin 7 of LOPTX C2495 ( 33nf ) s/c.14-09-04
PhilipsCP90Contrast weakR3944 5k preset broken14-09-04
PhilipsCP90Control micro processorsA production change has been introduced adding a shield to the control micro processor to prevent the processor being influenced by external fields. Replacements will be supplied as a kit comprising the processor, shield and fitting instruction. The sh14-09-04
PhilipsCP90Dark pic - volts at contrast pin col dec chip lowC2495 33nF in beam lim cct14-09-04
PhilipsCP90DARK PICTUREC2495 33nF14-09-04
PhilipsCP90DeadCheck C2679 ( 1nF ) D6679 replace with ( BYD33 ) C2695 ( 2.2nF ) R3623 ( 8R2 ) D6667 ( IN4148 )14-09-04
PhilipsCP90DeadCheck D6609 & D6610 Tr770214-09-04
PhilipsCP90Deads/c across lop - loptx faulty - quite common14-09-04
PhilipsCP90DeadT7677 o/c collector14-09-04
PhilipsCP90DeadD6665 1N4148 leaky14-09-04
PhilipsCP90Dead2 x 330µ caps in psu sec14-09-04
PhilipsCP90Dead - no display, HT presentC2691 330µ 25v (19v res cap) 14-09-04

PhilipsCP90Dead - no o/p from psus/c across 95v line - C2695 2n2 in parallel with D6695 BYW95B s/c, F1690 400mA Wickman fuse o/c14-09-04
PhilipsCP90Dead - overvolts prot operating3668 15R sm resistor o/c14-09-04
PhilipsCP90Dead - Pri HT okdry joints chopper tr coll14-09-04
PhilipsCP90Dead - st/by only - HT half its normal valueR3623 8R2 hi res, D6667 1N4148 o/c14-09-04
PhilipsCP90Dead - went off with a flashDry joints chopper tr 7677, s/c mains rect 6657 BYD14J, o/c 2A fuse14-09-04
PhilipsCP90Dead - whistling - over volts prot firingHT above normal 95v - Tr7701 BC548 in error amp cct s/c14-09-04
PhilipsCP90DEAD , NO STBY LED OR CHAN IND , CHECK FOR OSC AT PIC2934 - 2935 ( BOTH 27 pf )14-09-04
PhilipsCP90Dead but ok on dummy load with ht at 95vC2703 330µ 25v leaky14-09-04
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