Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
---|---|---|---|---|---|
Toshiba | V705B V3 CAT 1/2 | Intermittent dead | When pin 11 of IP001 U4614 jumps between 8v and 10v suspect shorted 2SA1020, as the secondary is shorted, leaving the chopper switching between on/off states | ||
Toshiba | AVM 2505 G3V25050 | Will not come out of standby, no picture | If at power on voltage on pin 37 of the micro drops low then reverts to 5v suspect memory chip ICA07 Toshiba 23319016 | ||
Toshiba | V730UK | No display, red LED flashing | Replace C1SS35 1000uF, 10V | ||
Toshiba | 2863DB C6SR | To remove protection to assist fault finding | Remove D471. It's a thyristor and is located next to the chopper transformer secondary side | ||
Toshiba | CF2666R TAC9102 | Screen is too tall, with vary faint retrace lines showing | Found that Capacitor C305 50V, 2.2uF was dry, C342 50V, 1uF was also dry too. Capacitors are near vertical IC 301 | ||
Toshiba | 2857DB | Int. frame collapse | Dry joints on regulator Q420, not too easy to find as it is not close to power supply or frame stage, it is the supply to the frame generetor IC | ||
Toshiba | V880MS | Dead | Check C822, Z801, Z802 CPN10 | ||
Toshiba | 2550TB | Set stuck in standby at switch on | Field output ic TA8427K faulty, also change 220uf cap | ||
Toshiba | 210T6BZ | Distorted sound / banging | Voltage at C832 over 25V! Replace Q809, C866, C869, C864 and resolder dry joints in PSU | ||
Toshiba | 145R7B | Dead | D808 s/c due to high HT caused by faulty switch mode ic STR50020 | ||
Toshiba | 219T9B | Intermittent field collapse after a few hours | Replace field output chip IC303 AN5515 | ||
Toshiba | 215R8N | Severe vertical distortion- `egghead` symptoms | Replaced c317 in vertical cct 2.2uf, 50v substituted 4.7uF. Must be 105ºtype!! | ||
Toshiba | 2577B | White horizontal line Frame collapse | Dry joint on TA8427K, Frame IC | ||
Toshiba | 28WD98B | Stuck in standby, 16 volt line low at approx 8 volts | Replaced C872 220uF, 50v, original had gone low in value | ||
Toshiba | 2573 | Stuck in standby. | Replaced ZP82 o/c And tuner internal short |