Hitachi SDT400 strobe - UK Vintage Radio Repair and Restoration Discussion Forum

LenC 54 · 22nd Feb 2019, 6:12 pm

On an impulse at a recent auction I acquired a dusty old SDT400 which, so far, appears to be in pretty good shape. Everything that could turn to goo had done so, but with a new belt and some grommets to replace the motor mountings the turntable is up and running. The main belt on the tape deck being next on the list.

In the meantime I also need to replace the strobe neon, would anyone know what the current rating for a new bulb should be please? (The supply, from a pcb, is 107v)

julie_m · 22nd Feb 2019, 7:40 pm

Just use an ordinary NE2 Neon bulb, with a series resistor of 220kΩ (anything from 100kΩ to 470kΩ will do).

22nd Feb 2019, 6:12 pm	#1
LenC 54 Diode Join Date: Apr 2018 Location: Penrith, Cumbria, UK. Posts: 4	Hitachi SDT400 strobe On an impulse at a recent auction I acquired a dusty old SDT400 which, so far, appears to be in pretty good shape. Everything that could turn to goo had done so, but with a new belt and some grommets to replace the motor mountings the turntable is up and running. The main belt on the tape deck being next on the list. In the meantime I also need to replace the strobe neon, would anyone know what the current rating for a new bulb should be please? (The supply, from a pcb, is 107v)

22nd Feb 2019, 7:40 pm	#2
julie_m Dekatron Join Date: May 2008 Location: Derby, UK. Posts: 7,735	Re: Hitachi SDT400 strobe Just use an ordinary NE2 Neon bulb, with a series resistor of 220kΩ (anything from 100kΩ to 470kΩ will do). __________________ If I have seen further than others, it is because I was standing on a pile of failed experiments.