Dicas Reparação Thomson








Pesquisa: thomson

Resultados 130

Dicas de reparação para: thomson
MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
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 timesChange vertical chip TDA8177F and the four diodes in front of it
Thomson TX807 EHT at switch on then goes deadFrame i.c. s/c TDA8177
Thomson 28WS23E ICC17 At switch on set starts-up with lots of sparks inside CRT socket, then switches to standbyReplace 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 flashoverCheck/replace TL02 and TL59 in the beam limiter circuit
Thomson TX807 Plain raster, retrace lines, no soundProblem in vif board, Resistor 68 ohms to +b supply line 12V
Thomson 28VK-44ENo start-up when cold, warm OKChanges CP198 47uF, 16v. Secondary Power supply
Thomson RP46East-west and north-south bowing. Really bad convergenceThe extra power supply is not working. Check R18 on primary side. It should read 220Kohm
Thomson ICC17 Picture lacking in contrast and brightnessThe symptoms suggested a beam limiter fault, replacing transistor TL02 BF422 which was found to be leaky produced excellent pictures
Thomson Ferguson14CB25UT C3615UTNo pic - sound ok but reverts to st/by aft 5-10secsDL07-BY228 in e/w stage
ThomsonW7023U ICC17Dead with front LED blinking 2 then 7 timesIn prot mode - brown gunge around LOPTx. Fit replacement (comes a s a kit) pt no 35123670
ThomsonW7023UTrips with brief line coll after LOPTx replacedFOP chip & ZL11 cp o/c - looks like a brown cap
ThomsonTX92FLED 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
ThomsonTX92 28DT73HReverts to st/by aft few minsDry joints pins 1 & 2 LOPTx
ThomsonTX91No sound aft droppedRA08 22k sm res dislodged;
ThomsonTX90 ChassisInt. 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.




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