| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Philips | GR1AX | Two lines going around. | Check/replace C2606 (68 uF; 4822 124 41599). | ||
| Philips | GR1AX | Tuning unstable | Voltage on D 6702 is not stable. Check/replace D 6702 (ZTK33B; 4822 130 30959) | ||
| Philips | GR1AX | Tuning drift | 33v zener & dropper checked ok - was tuner | ||
| Philips | GR1AX | Tuning - drift & flickering. | Replace ZTK33B voltage stabiliser. | ||
| Philips | GR1AX | Tripped at sw on 95v HT present at LOPTr | No line drive - R3100 1R in 9v current sensing risen to 4R | ||
| Philips | GR1AX | To release hotel mode ( child lock ) . | Put set on programme 38 , press either store & pr - ( to lock ) & store & vol - ( to unlock ) , or , press pr - & vol + ( to lock & u | ||
| Philips | GR1AX | To over ride protection cct | unsolder gate of THY6641 & SLOWLY power up via variac whilst monitoring HT at pin 6 of Loptx (should reach 95v) | ||
| Philips | GR1AX | To check psu without LOP stage connected | Do not use 60w bulb as dummy load - psu will not start - ok to just dis coil L5660 | ||
| Philips | GR1AX | St/by only - 95v HT only 5v | With 100v ac I/p, HT = 80v ; any higher I/p shut down the set with pulsing reset line on micro; D6671 zener BZX79-F4V3 faulty | ||
| Philips | GR1AX | St/by only | C2631 22nF in st/by cct leaky | ||
| Philips | GR1AX | Spare part information | Spare part information ---------------------- In service manual "GR1-AX Version 2" the specific partslist for the /58R is not mentioned. For this /58R use parts: position 1000: tuner UV917E/Phono; service code 4822 212 23696 positions 1600, 2606, 3603, 6 | ||
| Philips | GR1AX | Sound varies with picture content | Replace wire link 9511 (near tuner) with a 6.2 volt zener diode BZX79-B6V2 (4822 130 34167) and change C2030 into 22uF (5322 124 41431) | ||
| Philips | GR1AX | SOUND SLOW TO RETURN AFTER CHANNEL CHANGE | TR7046 SC | ||
| Philips | GR1AX | Sound slow coming on aft channel change | T7046 ( BC558 ) | ||
| Philips | GR1AX | Sound low vol | D6715 5v1 zener leaky (adj to micro IC7700) & disc ceramic caps around sound if chip - C2033 22nF |