| Make | Model | Problem | Solution | Date |
| | | |
| Found: 26
|
| Alba | CTV4850 | Field collapse - no sound | ZD402 12v 1.3w, R422 6R2 2w & C909 47µ C910 10µ | 14-09-04 |
| Bush | 2850/2855 | Service Mode access | Press Red & blue buttons together then P- & V+ together within 5 secs | 14-09-04 |
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| Bush | 2850NTX | Dead | Dry joints scan coil plug & TEA5101 fop chip & TEA5101 on crt base | 14-09-04 |
| Bush | 2850NTX | No pic with burning smell | burn up on red wire of scan coil plug - wired direct to pcb | 14-09-04 |
| Bush | 2850NTX Schneider TV4 | Bent verticals and pulsating width (Scene Dependent) | Replace CC808 4N7 SMD primary side of PSU you will probably find that
the pcb in this area has taken some heat. | 14-09-04 |
| Bush | 2850NTX TV4 | Line collapse | Can be dry joints scan coil plug but C419 330nF 400v scan coupling cap burnt & o/c in this case | 14-09-04 |
| Bush | 2850NTX TV8 | Dead apart from led flicker at sw on | C203 47µ 250v - checked ok out of cct | 14-09-04 |
| Bush | 2850NTX-A | Dead aft brief micro activity | Micro reqs sync pulse at pin 26 within 1 sec from line to function. This was missing due to T301 BC547B in line stage leaky | 14-09-04 |
| Bush | 2850NTX-A | Line & field collapse (single dot) | Burnt line scan coils plug & TDA8170 fop chip, D402 BA157, fus res R408 o/c | 14-09-04 |
| Bush | 2850NTX-MS | slow start up - reset problem | IC101 pin 33 needs 4.8v to start up mod - add 1µ & 100k res to 5v line | 14-09-04 |
| Bush | 2850NTX/A | Dead - no line scan | Scan pug/skt melted, after repair still faulty due to C307 330nF scan coupling cap o/c & check dry joints | 14-09-04 |
| Bush | 2850NTX/MS | no graphics, front panel buttons are inoperative, remote is inoperative,no sound, no picture - only blank full size raster with 4-5 coloured horizontal lines on the screen. | no flyback supply voltage to frame IC TDA8351 pin 6 caused by R438 0.22 Ohm o/c (near LOPT). | 14-09-04 |
| Bush | 2850NTXA | Dead with squegging noise from speaker | Cry joints C307 in line stage & field coll then visible, TDA8170 & R408 0R22 | 14-09-04 |
| Bush | 2850NTXA | E-W faulty | T302 (BC547) S/C and T303 (BC557) leaky. | 14-09-04 |
| Bush | 2850NTXA | Field collapse | TDA8170 & R408 0R22 | 14-09-04 |
| Finlux | 8500 | black lines at rh side int | bad earth to txt pcb pin 5 St4 | 14-09-04 |
| Goodmans | 2850DPL | Blank raster & flyback lines, sound & osd ok | CK53 12µ 63v in LOP stage | 14-09-04 |
| Grundig | CUC3850 | Dead - HT present , no line & display corrupt | IC656 LM317 12v reg not turned on because IC850 micro SDA2080-A003 faulty. When replaced, tripler arcing - proved to be the cause | 14-09-04 |
| Grundig | CUC3850 | Dead - no line drive - 150v HT ok | No 12v at TDA8140 drive chip. R661 0R2 burnt out caused by D661 BYW72 leaky | 14-09-04 |
| Grundig | CUC3850 | Pic pulses at random | Poor contact plug to Aquadag on crt | 14-09-04 |
| Grundig | CUC3850 | St/by only | 2SD1432 LOPTr T572 s/c due to s/c in TDA8140 line dr chip (Don't use BU508A instead of 2SD1432) | 14-09-04 |
| Grundig | CUC3850 | St/by only | Check setting of pre-set (standing bias for opto coupler) on vertical st/by panel | 14-09-04 |
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| Lowe | M124 C8500 | Dead with 1.6A fuse blown | TDA4601 chopper chip s/c, small blue therm in start up cct, T539 BU508D LOPTr hi res | 14-09-04 |
| Lowe | M124 C8500 | High HT (should be 142v) | C652 47µ 250v ; C653 47µ | 14-09-04 |
| Lowe | M124 C8500 | Pic jitter & /or hum on pic with chan display flickering, sound goes low & controls not working int | Check for dry joints in psu, front pcb & IR receiver | 14-09-04 |
| Orion | 3850 | Dead - psu blown up | psu chopper drive IC TEA 2262, mosfet STP480T, optocoupler TCDT1102G | 14-09-04 |