Dicas Reparação THOMSON
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Thomson | ICC20 | Set tries to start three times, HV comes up for a short moment. After this LED is blinking first four times, then seven times | Change vertical chip TDA8177F and the four diodes in front of it | ||
| Thomson | TX807 | EHT at switch on then goes dead | Frame i.c. s/c TDA8177 | ||
| Thomson | 28WS23E ICC17 | At switch on set starts-up with lots of sparks inside CRT socket, then switches to standby | Replace FBT - HR 8317. There is a repair kit available from Thompson for this , which includes a new loptx, tuning caps and a couple of coils. There are also some surface mount resistor value changes. It's Pt. no: 35175720 | ||
| Thomson | 24WK25US ICC17 | No/Low contrast after EHT flashover | Check/replace TL02 and TL59 in the beam limiter circuit | ||
| Thomson | TX807 | Plain raster, retrace lines, no sound | Problem in vif board, Resistor 68 ohms to +b supply line 12V | ||
| Thomson | 28VK-44E | No start-up when cold, warm OK | Changes CP198 47uF, 16v. Secondary Power supply | ||
| Thomson | RP46 | East-west and north-south bowing. Really bad convergence | The extra power supply is not working. Check R18 on primary side. It should read 220Kohm | ||
| Thomson | ICC17 | Picture lacking in contrast and brightness | The symptoms suggested a beam limiter fault, replacing transistor TL02 BF422 which was found to be leaky produced excellent pictures | ||
| Thomson Ferguson | 14CB25UT C3615UT | No pic - sound ok but reverts to st/by aft 5-10secs | DL07-BY228 in e/w stage | ||
| Thomson | W7023U ICC17 | Dead with front LED blinking 2 then 7 times | In prot mode - brown gunge around LOPTx. Fit replacement (comes a s a kit) pt no 35123670 | ||
| Thomson | W7023U | Trips with brief line coll after LOPTx replaced | FOP chip & ZL11 cp o/c - looks like a brown cap | ||
| Thomson | TX92F | LED flashing at sw on (prot mode) | disable pin 4 of IP 70 IC TDA8139 to over-ride prot cct - shows field coll; IC STV2145 (IF02) was faulty, but still no functs - replaced EEPROM - now bad col with green flashes - jungle chip faulty | ||
| Thomson | TX92 28DT73H | Reverts to st/by aft few mins | Dry joints pins 1 & 2 LOPTx | ||
| Thomson | TX91 | No sound aft dropped | RA08 22k sm res dislodged; | ||
| Thomson | TX90 Chassis | Int. White raster with flyback lines visible, or switches off. Seems as if there is a cold solder joint. | Replace TDA8218 chip. It has occured many times with these ST made chips. |