FL1.16 hoe werkt die voeding nu ook al weer? (Toestel of techniek)

door electron , eindhoven, 01-08-2023, 01:55 (483 dagen geleden) @ Gert Wouters

@Gert- Die smps's moet je je echt in vastbijten- daar waag ik mij niet aan..
Ik bewonder Maurice zijn moed.
Op Inet vondt ik summier wat- https://english.electronica-pt.com/repair-tips?ref=FL1.16&marca=PHILIPS&sintoma= Plaatje: rood= was je mee bezig, groen= repair-tips.
Sterkte, Ben@

#Tips- samenvatting.
Totally 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 130 427
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Supply switch-off sometimes Check 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 meas
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Supply +5V too low, black horizontal bar in picture. Bad sync. Check/replace IC7551 (LM358N; 4822 209 70672)
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Sometimes in protection, or hor. width varies Check or resolder on LSP the pins of E/W bridge coil 5521.
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Small picture with flyback lines. The +141 is about 110V. Check D6372 on LSP (LL4148; 4822 130 80446).
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Shuts off and on again on Pr.nr. 1 after 3 hours. D6272 (BZX55B5V6) interruption when it becomes hot.