Marca Model Difetto Cura Aim AR276 Stops aft 10 mins R443 6R8 ...

Grundig VS540 No signals e-e Phase locked loop chip in tuner type SDA3202-2 now replaced with TSA5511
Grundig VS720 Sound on pback weak & tinny Check C425 4µ7, C423 47µ & C415 4µ7 on audio/video pcb
Grundig VS910 Sound poor on rec/pback C423 in sound path from ACE head to sound IC
Grundig VS920 dead or pulsing psu C1626 47µ 25v also check 9 x 220µ caps
Grundig VS920 no mechs when cassette inserted solenoid faulty - can be repaired by replacing thermal fuse
check control codes:- 8516+OK=vid 1; 8517+OK=vid 2; 8518+OK=mod off; 8519+OK=
Grundig VS920 no r/c operation or modulator o/p
mod on; 4534+OK= unlock (if lock is displayed)
Hinari HI2V Dead 315mA fuse o/c only
Hinari HI2V Powers down aft 1/2 sec F803 2A o/c, D804 1N4004 s/c & D802 split in 2
Hinari HI2V Won't accept tape - sw off aft 5 secs Clean mode sw
Hinari HI2V Won't accept tape - tries loading without tape in Mech timing 1 tooth out
Hinari VTV100 No Play/FFwd etc Idler jamming - clean or replace
Hinari VXL4 int dirty head symptoms dry joints head pre-amp plug on main pcb
Hinari VXL4
Plays ok to start with then top of picture flickers gradually
becoming worse until top of pic folded over and colour lost Remove capstan motor clean and oil bearing
Hinari VXL4 SLOW DRUM ROTATION THEN STALLS IC01 BU2716S
Hinari VXL5 Int stop in any mode =- counter erratic Replace reel TU sensor WVE Pt no 72005 £7.84
IC303 pin 26 (mute) did not drop to 0v - IC101 pin 11 not producing 5v vert pulse -
Hinari VXL6 blank raster in pback
IC101 faulty
Hinari VXL8 No FFwd/Rew Rubber grommet/boot on sliding plate worn - replace or reposition
Hitachi FX850E Selecting RF O/P
with the set in standby press play /still button the display on video should read RF 35
if it reads RF_ _ there may be no rf output , so while still in standby press stop button
and RF_ _ appears and the required rf output can be selected using the channel up
down buttons if no rf is required it can be switched off at this stage by pressing stop
again
Hitachi MX748E Modulator adj press play in s-by, ch up/down sets the output and stop button switches it on and off.
Hitachi Various Hardware Reset
switching points with a 3 inch noise band near the top of the
Power up whilst holding in Record & Reset buttons
Hitachi VCF860 picture open circuit C614 2.2uf cap in the servo stages.
Hitachi VCM835 Display long time to appear Check caps in psu
Hitachi VT120 E-E int overloads IC203 module HT4757A on Y/Chr pcb
Hitachi VT120 No play - tape loads then unloads No 4.43Mhz I/p to servo chip pin 32. IC301 HT4539B o/p int - chip faulty
Hitachi VT130 Low e-e & rec sound C08 4µ7 35v in mod/if unit
Replaced many hi esr caps in modulator but no improvement gained - replaced
Hitachi VT130 Pulling, lines etc in E-E , OK in Pback
mod/tuner with a scrapper which cured problem