Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
Panasonic NVFS90EG
Power supply problem, high frequency sound only !Check / replace C9 1uF, 400V
Finlandia C/D 66KZ6/F
No power mains fuse intactCheck Replace C706 10uF 350v Cap In Psu o/c also check / replace T511 S2000AF H.out Transistor
Mitsubishi BD28S 11AK19
Narrow E/W PicC630 o/c
Toshiba 210T6BZ
Distorted sound / bangingVoltage at C832 over 25V! Replace Q809, C866, C869, C864 and resolder dry joints in PSU
Philips 28ML8805-16B FL1.6AA
Clips picture at bottom when warmVertical deflection IC defective 7450 TDA3654Q
Philips 28ML8805-16B FL1.6AA
Some front panel indicators are darkLEDs are tired
Philips 28ML8805-16B FL1.6AA
DeadFuse open 3.15A, transistor 7216 ON4827 = BUT12AF shorted and solder joint of SMD resistor 3305 11K cracked located on PS control board
Firstline 1433GR
No picture, no OSDZener diode D219 12V shorted. Check capacitors C608, C606, C617, C619, C411 and resistor R256 39 ohm, 1W. Unreg. voltage to R256 should be 16-17V with no change when warm
Decca D14TT92
Dead set, with 300v across smoothing takes a very long time to discharge, watch out!Check RP06 3.9M ohm for O/C, the one I had had nothing else gone
Sony KV28WS2U
OSD volume bar present continuously. No functions availableFront panel tactile switches leaky. Replace same
Samsung TXB1940
Red led blinks on / off, TV does not turn via power button and/or remote but after 20 minutes or so it turns on and works fineReplace R902, R901, R905, R903, R900A, Q902, and possibly the two one small and one large capacitors in the section labeled as the power supply. The board will be black under the components that are bad. Q902 is an NPN transistor and is hard to find.
Goldstar TV-Vid Combi Model: KY14V30
Squeeking sound from chopper transformerShorted voltage regulator, zener diode or h-out
Orion 5190DK
No secondary suppliesCheck / replace C418 100uF, 25v, C489 100uF, 40v, C425 1uF, 400v, posistor PTC401, R422 5.6ohms, 1w and the chopper transformer
Thomson TX807
EHT at switch on then goes deadFrame i.c. s/c TDA8177
Panasonic TX33AK10 EURO 5
Strange picture / bleary / movement blurr etc etcThis problem was caused by eeprom corruption, once the eeprom was reset the fault was cured note that after a reset reinstallation i.e. tuning will be required
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
Philips L6.1AA
Sound goes off and no remote control functions when heatedT7505 in +5V supply, replace 482213041344
Sharp DV3760H
Will not work, standby red LED flashingC604 in the 12V line is bad
Philips 29PT785C G88
The set goes into protection and tries to restart. The tube shows no horizontal linesAfter disconnecting the horizontal plug the +148V and CRT high voltage remained stable. The small pcb on the tube scan coils with 5 or 6 pins was dry jointed at copperside
Telefunken TX92F
Keeps on burning the surge resistor 280ohm 5W in series with the chopper transformerReplace the chopper transfomer it has a short either on the primary or secondary side