Elf rt2 amp blows fuse

[Barry Webb]

I have just finished servicing this machine most of which was frozen together.
anyway that side is sorted I then powered it on to test it but the was no sound so I looked at the fuses and the main screw in one had blow so I replaced it and on powering the machine on I turned the amp control to on I got s load hum and the fuse blow.
I have taken the amp out and can see 4 Toshiba parts with black legs number 1d2z1 with a 6e or 6h at the end any help would be much appreciated.
Barry.

[Barry Webb]

Ok update I've found the problem it's the output transistors that have blown 2sc1667 and 2sa837 would anyone have a old Eiki amp that have these on like to sell me them.
Barry

[Maurice Leakey]

Barry
I am not a technician, but I am wondering why the transistors should have blown. Perhaps other components contributed to their demise. Capacitors often give trouble in the long run.
The RT model is quite old.

Maurice

[Barry Webb]

Hi Maurice it would be due to someone turning on the amp with no speaker plugged in it often blows them on the elf.
Barry

[Maurice Leakey]

Barry
Yes, I see.
This could easily happen as this model does not have an internal built-in speaker.


Maurice

[Maurice Leakey]

Barry
Both transistors are available on eBay.
https://www.ebay.com/p/1901819128
https://www.ebay.co.uk/itm/2SC1667-O...-/121072706439


Maurice

[John Burgess]

Barry, if you look on eBay a member cinema - paradiso has spare amps for Elf machines, also loads of other parts. Hope that helps, John

[Maurice Leakey]

And an amplifier !
https://www.ebay.co.uk/itm/ELF-EIKI-...4AAOSw1jNcuhx-
I can thoroughly recommend Martyn Stribling (Cinema Paradiso). I bought an excellent Elf RT-0 from him three years ago, and as John says, he also has many parts for Elf/Eiki, and other projectors.


Maurice

[Barry Webb]

Hi I have tried him he only has amps for optical only mine is mag/ optical.
Barry