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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
PhilipsFL1.10Poor colors, shaking pictureCheck IC7366 color signal delay circuit (TDA4660). Replace by TDA4661 (4822 209 31714). When TDA4660 is replaced by TDA4661 also change the following components: - delete 2386, 3385 - change 3383 into 33k (4822 051 10333) - c14-09-04
PhilipsFL1.10Set can only be operated with Remote ControlCheck whether "Child Lock" is disabled. To check this, see "Frequently Asked Questions", "How to disable Child Lock". 14-09-04

PhilipsFL1.10Set inoperative only red or green LED. Supply was 141V but no EHT.Line drive puls for T7506 (2SC4288A) too low. L5503 defective (Line drive coil; 4822 157 63252) 14-09-04
PhilipsFL1.10Sometimes in protection, or hor. width variesCheck or resolder on LSP the pins of E/W bridge coil 5521. 14-09-04
PhilipsFL1.10Sometimes set switched back to standby. Only red LED on.Microprocessor panel defective (4822 212 30803 and 4822 900 10423) 14-09-04
PhilipsFL1.10Sometimes vibration in vertical direction.Replace C2410 (150nF 5%; 4822 121 41854) on LSP. 14-09-04
PhilipsFL1.10Splitted characters with TXT (Bad starting of DVTB).Add R3100 (1M 5% 0,5 W; 4822 116 52235), between pin 7 and pin 15 of IC7111 (SAA9042) on the LFR box. Change 4108 into 220nF 50V (4822 122 32927) on the LFR box. REMARKS : Introduced in production in week 9333. 14-09-04
PhilipsFL1.10Spook in pictureUse special antenna cables. Codenumbers: 4822 321 61224 PAL 1 meter 4822 321 61225 PAL 2 meter 4822 321 61226 SECAM 1 meter 4822 321 61227 SECAM 2 meter14-09-04
PhilipsFL1.10Stripes in picture and after about 5 min. only snow.Replace tuner FQ916BL (4822 210 10565). 14-09-04
PhilipsFL1.10Supply +5V too low, black horizontal bar in picture. Bad sync.Check/replace IC7551 (LM358N; 4822 209 70672) 14-09-04
PhilipsFL1.10Supply switch-off sometimesCheck the +5 stand-by. This voltage has to be 5.5V and may not vary. When the voltage drops below 5.2V the set switches-off. Cure: check D6266 for leackage (BZX79/F6V8; 4822 130 34278) or check T7268 for leackage (BD943F; 4822 130 62742). The 5.5V is meas14-09-04
PhilipsFL1.10Synchronization, picture disappearsD6703 and T7704 defective on picture tube panel. 14-09-04
PhilipsFL1.10Total inoperative, leds blinking, error 99Check and replace if necessary C2504 and/or 2505 (2kV HRR) on the Large signal panel. Replace by a 3kV15 HR-R capacitor if possible: 820pF 4822 126 13152 1nF 4822 126 13153 1,2nF 4822 126 13154 1,5nF 4822 126 13155 1,8nF 4822 126 13156 2,14-09-04
PhilipsFL1.10Totally inoperative.Transistors 7250 (BUX85F; 4822 130 62509) and 7251 (BC848; 4822 130 61207) in microSOPS defective. Or D6251 (LLZ-C5V6; 4822 130 80954) and R1250 (=R3230; 1 Ohm; 4822 052 10108) defective. Or T7270 (BD825; 4822 130 41746) Or T7201 (BC857C; 5322 130 42714-09-04
PhilipsFL1.10Totally inoperative. Only red LED on.Check line driver transformer L5503 on LSP (4822 142 40328). 14-09-04
PhilipsFL1.10Tuning does not functionResistor R3240 on LSP in V-tuning wire broken. 14-09-04
PhilipsFL1.10Unstable picture, horizontal jitter.Check/replace R3405 on the LSP. (4822 051 10303 for 50 Hz sets; 4822 051 10333 for 100 Hz sets). 14-09-04
PhilipsFL1.10Various faults can be observed.Check the earth connection from the SSP: connect earth tuner with earth line output transformer (LSP) to find-out whether the problem is solved. Check connectors L02 and S02 pins 1,2 (sometimes only 7 wires are used in the connector) 14-09-04
PhilipsFL1.10Wrong service batch of ST24C08CB1 memory IC'sWrong service batch of ST24C08CB1 memory IC's 4822 209 32283 ------------------------------------------------------------ Temporarily a wrong batch of EAROM's has been delivered, causing the fault "NVM MEMORY NOT WRITE PROTECTED" after replacing the EAROM14-09-04
PhilipsFL1.10Wrong synchronization, unstable colorsD6417 on the LSP dependent on temperature, check/replace (4822 130 81223) 14-09-04
PhilipsFL1.10 28CL677/257St/by onlyLOPTr BU508AF s/c due to dry joints scan coil plug14-09-04
PhilipsFL1.10 28CL6770Dead - LOPTr s/cCheck for dry joints at scan coil plug14-09-04

PhilipsFL1.10 28CL6770/252St/by onlyLOPTr s/c due to dry joints scan coil plug or R3347 in psu risen from 75k to 100k (in set HT network)14-09-04
PhilipsFL1.10 28CL6770/25ZDead - LOPTr s/cDry joints scan coil connector - can run psu on dummy load by removing L5511 & disable prot by s/c base/emitter of sm Tr 738414-09-04
PhilipsFL1.10 28CL6770/25Zint. sound distortion (sounds like machine gun fire) only when an external unit is switched on (e.g. VCR, sat. box etc)change Xtal 1602 (482224280276) or use non-fully wired SCART lead14-09-04
PhilipsFL1.10 28CL6770/25Zno line phase lock (RH side of pic in the LH of the screen)R3511 10R 0.5W o/c (482211652176), it provides sync feedback from LOPTx to TDA2579A14-09-04
PhilipsFL1.10 28CL6770/25Zstuck in stby, red LED onSOPS panel faulty, check R3537, R3514, if faulty check T7512, T7513 BC548C, R3515,R3516 2R7. Part nos: SOPS panel - 482231031921, resistors 2R7 - 482211652206.14-09-04
PhilipsFL1.10 28CL6770/25ZTrips when sw from st/byTDA1521 Audio o/p IC s/c14-09-04
PhilipsFL1.10 AAdead, no LEDs, HT low at 115Vno 5V stby supply, R3249/3252 220k 0.25w14-09-04
PhilipsFL1.14"NVM write protection enabled" message on screen.Startup problem or 'NVM write protection enabled' message on screen after replacement of NVM (ST24C08CB1; 4822 209 32283) with a ST24C08CB6 (4822 209 33113). Use as replacement the ST24C08 1 (9311 021 36682).14-09-04
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