| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | BE4 | Reverts to st/by at sw on with 6 flashes from LED | over-current protection circuit (Q600, 602) is operating, usuallyprobs in LOP. To identify the cause, first dis FOP chip (IC501). If set switches on with frame collapse, replace IC501. If set fails to switch on, dis HT feed to LOPTx. This should give 4 flashes of st/by LED (no horizontal fly-back) showing that problem is in LOP. Check LOP comps before condemning LOPTx. If st/by LED continues to flash 6 times even with LOPTx disd, check R620 (270K) & R622 (470K) in over-current protection cct. | ||
| Sony | BE4 | Pic displaced down by 2cm | Volts on Q500 & 501 way out - Jungle chip MC44007P faulty | ||
| Sony | BE4 | No txt or OSD | R081 o/c, C810 also failed | ||
| Sony | BE4 | Field collapse | No 24v supply to IC501 - R814 0R47 ?w fusible o/c - improved type 1-249-443-11 introduced | ||
| Sony | BE4 | Dead - LED flashes 6 times then repeats | Over current problem - Loptx u/s | ||
| Sony | BE4 | Dead - LED blinks 6 times (Field fault) | TDA9302H FOP chip dry jointed and u/s | ||
| Sony | BE4 | Dark pic | C823 0µ022 250v leaky in beam lim cct | ||
| Sony | BE-4A KVM2171U | no text, excessive width, poor grey scale | NVM corruption. Replace IC002 new type ST24C02FB6 (875937032). Change C0255 from 47uF to 1000uF, add 5.6V zener from pin 8 IC002 (cathode) to earth, tighten earth spring around CRT in the shape of U | ||
| Sony | BE-4A KVM2171U | frame collapse | R622 (HT feed) o/c, R814 0.47R safety (frame feed) o/c | ||
| Sony | BE-4A KV21T3U | volume goes to max, no remote or front control functions | Micro gets hot, replace Micro part no 875947506 | ||
| Sony | BE-4A KV21T3U | no pic (blank video) | D722 (871999133) o/c on CRT | ||
| Sony | BE-4A KV21T3U | blank raster with flyback lines | A1 voltage too high, replace LOPTx | ||
| Sony | BE-4 KV16WT1U | frame collapse (no picture) | R814 0.46R 0.5W (121781111) o/c, IC501 TDA9302, C504 100uF 50V, also replace D501 RGP10GP (871930243) or may fail again | ||
| Sony | BE-4 KV16WT1U | frame collapse | DJ L807 wire link to LOPTx earth | ||
| Sony | BE-4 KV14T1U | dead | LOPTr Q802 S2055N s/c, R615 0.46R (121737100) o/c, IC601 STRS5706 s/c |