Toshiba SDV398 Stops recording prematurely

short

with a stop watch , check it is exactly 15 minutes to the second or just plus or minus 5 minutes say, for 1 , 2 and 3 hour records , also try with 3 hour and 4 hour tapes to see if there is a difference

new.

be

keep

If

the most likely reason. Either loss of friction in a slip clutch or wear in a pivot allowing a pulley in the jockey wheel assembly to touch the chassis, both situations when sufficient diameter of tape has built onto the take-up spool to trigger the loss of drive

It never fails on playback. Could there be some subtle transport load difference between record and playback?

Regards,

Boris Mohar

Got Knock? - see: Viatrack Printed Circuit Designs (among other things)

void _-void-_ in the obvious place

My first VCR, circa 1981, had a timer problem connected with an incorrectly designed chip. If you set it to (say) start recording at 11:30PM and stop at

incorrectly

at

So a divide by zero / year 2000 type problem with that one. I would have set the clock 12 hours out on that one, assuming only recording over midnight and never noon Perhaps the OP should take a careful note of times , assuming there is a timecode recorded , then see if there is a consistency in the drop out times at recording.

I just looked through my repair tips , maybe relevant

Ferguson FV21 Manual record and short lead-time timed record OK but failure of overnight record. Replaced the the 3 small electrolytics on the clock / timer panel and broke / inspected /remade all connections and also at someone's suggestion tightened all earthing point through-pcb screws on the various boards.Somewhere along the line must have effected a cure.