| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Philips | GR1AX | Dead - HT at 8v | R3613 120k in startup fet cct hi res | ||
| Philips | GR1AX | Dead - HT at 15v | D6610 BZX79C10 leaky | ||
| Philips | GR1AX | Dead - 95v HT low at 15v | C2618 27nF o/c - blue plastic body | ||
| Philips | GR1AX | Dead | D6610 10v zener s/c; BUK444B chopper FET s/c; R3616/3680 1R o/c; BUT11AF loptr s/c | ||
| Philips | GR1AX | Dead | D6546 BY228 EW mod diode s/c, F1534 fuse blown; | ||
| Philips | GR1AX | Dead | D6613 15v zener, D6610 10v zener & D6644 1N4148 all leaky & LOP Tr s/c - check R3616 & R3680 1R in series | ||
| Philips | GR1AX | Dead | L5519 o/c; C2523 6µ8 63v low cap | ||
| Philips | GR1AX | Dead | CHECK L5524 - 9v SUPPLY TO LINE OSC FROM PIN 26 STARTED FROM PULSE ON PIN 11 OF i.c. 7020 | ||
| Philips | GR1AX | CRT types | CRT types --------- Some receivers were fitted with a CRT type A34JFQ40X04 in production. The standardized replacement for all 14" receivers with these chassis is the A34EAC01X45. Spacers may have been used when mounting the A34JFQ40X04 in the cabinet. | ||
| Philips | GR1AX | Correction to service manual LOT winding | Correction to service manual LOT winding ---------------------------------------- In the service manual of the GR1-AX chassis the circuit of the line output transformer is drawn incorrectly both in diagram A and the main PCB layout drawings. The +160V wi | ||
| Philips | GR1AX | Control micro processors | Control micro processors ------------------------ A production change has been introduced adding a shield to the control micro processor to prevent the processor being influenced by external fields. In future, replacements will be supplied as a kit compr | ||
| Philips | GR1AX | Contents of memory lost | It may happen that when switching on from standby the set comes on in "store lock" mode (sometimes called "hotel mode"). In this mode stored settings for programme selection and personal preference cannot be changed (see operating instructions for leavin | ||
| Philips | GR1AX | Colours flicker and disappear. | Check C2050 (68nF; 5322 121 42465). | ||
| Philips | GR1AX | Colour dropout when reproducing pre-recorded video tapes | When reproducing poor quality pre-recorded video tapes, the available chroma burst signal from the recording may not be sufficient resulting in colour dropout. This can be improved by increasing the chroma sensitivity of the receiver. The value of C2322 | ||
| Philips | GR1AX | Colour - green screen. | IC TMP47C434-3559 tuning IC. |