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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
PhilipsFL1.20Overview of SOPS repair kitsOverview of SOPS repair kits ---------------------------- FL1.0 AG00 upto AG03 4822 310 20492 FL1.0 AG04 and higher 4822 310 31921 FL1.1 25" and 28" 4822 310 31919 FL1.1 33" 4822 310 31932 FL1.2 4822 310 31932 FL1.6 14-09-04
PhilipsFL1.20Picture twists from topVoltage of pin 8-IC7450 (TDA3654Q) on the LSP has raised to ca. 20 V. Check diode 6451 (BZX79/C3V6; 5322 130 34834 or BZX79/C10; 4822 130 61219) 14-09-04

PhilipsFL1.20Set 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
PhilipsFL1.20Sometimes vibration in vertical direction.Replace C2410 (150nF 5%; 4822 121 41854) on LSP. 14-09-04
PhilipsFL1.20Supply +5V too low, black horizontal bar in picture. Bad sync.Check/replace IC7551 (LM358N; 4822 209 70672) 14-09-04
PhilipsFL1.20Supply 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
PhilipsFL1.20Various 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
PhilipsFL1.2S50Hz buzz noticable through speakerCheck/replace IC7680 on the SSP - TDA8425, pseudo stereo IC. (4822 209 63734). 14-09-04
PhilipsFL1.2SBad 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
PhilipsFL1.2SBad or no functioning of the TDA4680/V4.Check/replace IC7430 TDA4680/V4 (4822 209 31592). It is recommended to add a zener diode BZX79-C12 (4822 130 34197) between pin 28 of the TDA4680/V4 and anode to ground. REMARKS : Introduced in production in week 9140. 14-09-04
PhilipsFL1.2SBlack lines interference.Replace position C2450 (4822 121 41815). 14-09-04
PhilipsFL1.2SBUX85F in mikroSOPS defectiveChange the value of C2260 to 4n7F, replace 7270 with transistor BD825 (4822 130 41746). 14-09-04
PhilipsFL1.2SColored picture or picture is green/red, fly-back linesCheck zenerdiode 6450 on pin 19-IC7430 on the LSP. New diode must be Philips (Telefunken does not work), 4822 130 81512 14-09-04
PhilipsFL1.2SCorrection to service information FL 95.01Correction to service information FL 95.01 ------------------------------------------ Correction in the overview of 100Hz and Proscan boxen. The replacement for service code 4822 212 30534 must be 4822 212 31231 The replacement for service code 4822 2114-09-04
PhilipsFL1.2SDoes not start.Check/replace C2241 330 uF (4822 124 42208) on LSP. If C2241 is defective it is recommended to change the value of C2228 on the LSP into 33nF (4822 122 31981). REMARKS : Introduced in production in week 9325. 14-09-04
PhilipsFL1.2SDuring production an EEPROM protection panelDuring production an EEPROM protection panel (4822 212 31266) is introduced. Together with this also the following components have to be changed: On the Small signal panel: - Add position 3256 and 3257 4k7 (4822 051 10472) - Delete position 3280 and 3281 14-09-04
PhilipsFL1.2SIntermittent NICAM decoding.Replace C2108 on the multi sound panel into 33pF (4822 126 10324). REMARKS : Introduced in production week 9129 14-09-04
PhilipsFL1.2SJitterIn PIP unit change the value of R3336 to 4k7. 14-09-04
PhilipsFL1.2SLow Brightness TXT and OSD, Picture OKIf this condition occurs, check the Option Codes. Resetting the Option Code numbers as per the Service Manual provided the cure. 14-09-04
PhilipsFL1.2SLow frequency hum from subwoofer, buzz from right hand squeeter.Check DC level on pin 1 and 9 of IC7011 (TDA1521). If not correct, replace (4822 209 63913). 14-09-04
PhilipsFL1.2SModificationModification ------------ On the LSP the following items are changed: - item 2450 changed into 22nF 100V (4822 121 41934) - item 3457 changed into 10k (4822 051 10103) Reason: Solution for top reel line on screen REMARKS : Introduced in 14-09-04
PhilipsFL1.2SModificationModification ------------ On the High-End box item 6109 (BZX79-C4V7) has been added (4822 130 34174). This diode has been mounted with the cathode to R3155/L5150 and with the anode to R3151 (earth). REMARKS : This modification has been introduce14-09-04

PhilipsFL1.2SModification for improved +5VModification for improved +5V ----------------------------- Item D6551 on the large signal panel has been changed into BZX79-B7V5 (4822 130 30861). REMARKS : Introduced in production in week 9312. 14-09-04
PhilipsFL1.2SModification improved bandpass for high frequencyModification improved bandpass for high frequency in -/61 sets -------------------------------------------------------------- On the Korean stereo panel the following items are changed: - item C2080 added 10nF 50V (4822 121 41857) - item C2083 changed int14-09-04
PhilipsFL1.2SModification TDA4660 -> TDA4661 on the SOPSModification TDA4660 -> TDA4661 on the SOPS ------------------------------------------- During production position IC7366 on the SSP has been changed from a TDA4660 into a TDA4661 (4822 209 31714). Together with this IC also some other components are chan14-09-04
PhilipsFL1.2SModification TDA4680/V4 -> TDA4681/V1 on the SSPModification TDA4680/V4 -> TDA4681/V1 on the SSP ------------------------------------------------ During production IC7430 TDA4680/V4 has been changed into the TDA4681/V1 (4822 209 32271). Together with the IC also some other components must change: - ite14-09-04
PhilipsFL1.2SModification to improve sharpnessModification to improve sharpness --------------------------------- To improve sharpness the following items are changed on the small signal panel: - item 3317 changed into 10k (4822 051 10103) - item 3331 added 10k (4822 051 10103) - i14-09-04
PhilipsFL1.2SModification: reducing picture dimming with subtitModification: reducing picture dimming with subtittle and lowering the heater voltage ------------------------------------------------------------------ On the Picture tube panel the following items are changed: - item C2708 changed into 270pF (4822 12214-09-04
PhilipsFL1.2SNo colors in TV modeCheck IC7365 (TDA4650) on the SSP (4822 209 30837) 14-09-04
PhilipsFL1.2SNo sound, "ON, Standby, I" LEDs blinking10MHz crystal 1602 on the SSP defective, 4822 242 80276 14-09-04
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