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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
PhilipsL6.1Noise on one channel, wrong stereo indicationNoise on one channel, or stereo indication while transmission is mono (or with NICAM reception). On audio module, change IC7353 to MSP3400C-C6 (4822 209 13099) 14-09-04
PhilipsL6.1ONLY FOR 20" CRT A48ECR141X18 changed into A48ECRONLY FOR 20" CRT A48ECR141X18 changed into A48ECR143X18 ------------------------------------------ For service code 4822 131 11314 was initially delivered picture tube A48ECR141X18. This picture tube is however no longer available and is replaced by type14-09-04

PhilipsL6.1Picture jumps to the left, narrow pictureChange IC7100 TDA8361 14-09-04
PhilipsL6.1Picture size 20" too bigThere is no adjustment for H-width nor for the power supply. When R3507 is changed, the output voltage (+96S) will change. 14-09-04
PhilipsL6.1Servicing the Philips L6.1 ChassisSee TV Mag Jan 200014-09-04
PhilipsL6.1Set does not always start-upCheck and replace if necesarry item 3134 by a 27 Ohm resistor with service-code 4822 053 1027914-09-04
PhilipsL6.1Set total inoperative, no LEDCheck/replace T7504, D6506/6514, F1501, R3514/R3515 14-09-04
PhilipsL6.1Set totally inoperative, no LEDCheck/replace first R3508 (6K8), then mount supply kit if necessary. 14-09-04
PhilipsL6.1Set totally inoperative. No LED on.Check/replace LOT L5422 and line transistor T7422 (BUT11AX). 14-09-04
PhilipsL6.1Sometimes hang-up of the set; only for teletext version !In L6.1 chassis change pos 7505 to BC337-40, codenumber 4822 130 41344 and change pos 3500 to 470 ohm, service codenumber 4822 051 20471. (All changes are in diagram A1, power supply.) REMARKS : Only teletext version. 14-09-04
PhilipsL6.1Strange crack/noise if the sets are broadcasted by cable networkApply new IF saw filter called CE (Marking) module (4822 212 11352). This module can be switched between BG and DK. How to adapt the set: * first remove saw filter on pos 1001 and replace this by CE module 4822 212 11352. * Solder the black wire i14-09-04
PhilipsL6.1Supply hiccupping.Check/replace line transistor T7422 (BUT11AX). 14-09-04
PhilipsL6.1Supply improvementSupply improvement ------------------ If line transistor has short-circuit, then also the supply can become defective. To prevent this, mofify supply: 2503 33nf 5322 121 42489 3512 68K 4822 116 52297 6510 BZX79-C12 4822 130 34197 Check also whether C251214-09-04
PhilipsL6.1Supply inoperative.Check/replace R3518 120KOhm. 14-09-04
PhilipsL6.1Timer does not work properly above 4 hours.Change software into new version;codenumbers are still identical. 4822 209 14646:TXT 1 p Mono Pan-European L6TXTMOEU-1.1 3/4 keys:SAA5290ZP/072 4822 209 15425:TXT 1 p Mono Greek/Turkisch L6TMOGT-1.1 3/4 keys:SAA5290ZP/074 48214-09-04
PhilipsL6.1Violet bar at the right side of the picture with Canal+ decoder.Add on pos C2423 (Position unbekannt) a capacitor of 680 pF. Codenumber 4822 126 12269.14-09-04
PhilipsL6.1White picture with flyback lines; VG2 reacts at focus adjust.Repair picture-tube by artificial flashover 14-09-04
PhilipsL6.1 14PT1332/05Field collapses to about 1" aft warm upScan coils - measured 12.6R cold & 2R2 when heated14-09-04
PhilipsL6.1 14PT1532No picture, hissing noise from speakers ( like no aerial), front LED not lit. Only 1v on micro supply lineReplaced 7505 BC548B, 5V reg from 5500 transformer. Philips Mod. Replace BC548B with a BC337-40 & change R3500 from 330R to 470R14-09-04
PhilipsL6.1 20PT1552Contrast poorTDA836114-09-04
PhilipsL6.1 21PT1532Int locks up or loses picCarry out the following mod Remove Tr7505 (BC548B) & fit a BC337-40, change R3500 from 330ohm to 470ohm (these two are in the 5v rail) if any unusual faults persist then suspect corrupted EEPROM (part No 4822 2096 2098)14-09-04
PhilipsL6.1/6.2For repairing PSUMod kit available from CHS P10663 ?8.3414-09-04

PhilipsL6.1AASound goes off & no R/C functs when heatedMicro faulty14-09-04
PhilipsL6.1AAoff - tr 7503 s/c R3514/3515 o/cfit psu kit & check lop tr, lopt, opto coupler & D6426 NOTE- will not run on dummy load - use variac with lop tr removed14-09-04
PhilipsL6.2A 50 Hz hum is audible in the loudspeaker at min volumeDone at the audio module. 1. Check the index number of the audio module (number in white at the right side of ls connector 0071, copper side). If the number is 8211 014 1038 4(!): check if there is a capacitor between pin 1 and 2 of ic7205; REMOV14-09-04
PhilipsL6.2Addition to Service ManualAddition to Service Manual -------------------------- In addition to the L6.2 Chassis manual, following codenumbers are different for 90 degr./ 21" sets: picture tube, A51EAL155X47, 4822 131 11105. LOT, pos 5422, 4822 140 10635. SOPS transfo14-09-04
PhilipsL6.2Autosearch does not stop on all video carriers.The reason is a too high scanning speed; Connect 1Mohm + 22nF between R3603/R3604 and R3619/R3662 in circuit diagram A4.(R3619/R3662 is in circuit diagram A4: A2-15; this point is also connected with wirestrap 9126 of diagram A2.) The resistor of 1Mohm is14-09-04
PhilipsL6.2Bad 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
PhilipsL6.2Codenumber informationCodenumber information ---------------------- During production item 7504 (STP4NA40FI) on the mono carrier has been changed into the STP5NB60FP - 9322 126 65687. If you change during repair the STP4NA40FI into the STP5NB60FP also the following items have14-09-04
PhilipsL6.2Correction to styling 182 of Product Survey 1997-4 (4822 727 21584)The code number mentioned at position 10 of styling 182 is of the 3-fold control frame (4822 464 10326). The code number for the 4-fold control frame is 3111 254 24531.14-09-04
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