Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Alba | CTV842 | Dead - no line drive | Line dr tfmr o/c due to glue attack - managed to repair | ||
Alba | CTV841 Onwa | St/by only - relay chatters when sw held in | D401 | ||
Alba | CTV841 | Only tunes over lower bands | R646 10k 2w o/c (in front of loptx) | ||
Alba | CTV841 | Dead with 4R7 surge limiter o/c | Check 4 x 4n7 ceramic caps in mains bridge rect for s/c | ||
Alba | CTV841 | dead | chopper tr BU508AT s/c, R902 2R2 safety res o/c, C909, 911 47µ 50v HT now steady at 111v | ||
Alba | CTV840 Onwa | No tuning although the set displayed tuning drive | R125 ( 47R ) was opencircuit because C127 ( 470uF 16V ) was short circuit .These components form a filter in the 9.25V supply | ||
Alba | CTV840 Onwa | Black vert bars with background pic | C420 22µ 160v o/c | ||
Alba | CTV840 | No tuning/store or analogue adjust apart from Vol | -30v supply low pin 9 IC601 - C919 330µ 50v esr >100, also check ZD601 30v zener | ||
Alba | CTV840 | No tuning | R125 47R o/c, C127 470µ 16v s/c | ||
Alba | CTV840 | Field collapse | C404 22nf int s/c req replacement of field chip LA8730 & supply diode | ||
Alba | CTV840 | dead | chopper tr BU508AT s/c, R902 2R2 safety res o/c, C909, 910 47µ 50v HT now steady at 111v | ||
Crown | CTV8136 11AK08 | Não tem imagem | Vertical IC 701 TODA 3653B aquece | Sub C704 = 100n 50volt | |
Sony | TTV8U | BEATS ON PICTURE | Beat on picture like adjacent channel interference. |