f901 fuse

If i test this with a multimeter with the mpc off, i get no continuity.
(eg. the same result as holding the test probes apart.)

Does this mean it is broken?

Peace

Have you tested pin 25 to ground on the SCSI rear connector? It should read 5 volts. If not, the SCSI fuse is bad.

http://scsiforsamplers.com/scsifuse.asp

Female DB25

7, 9, 14, 16, 18, 24 are the ground pins
according to scsi standards.


thanks for the extra tip!

Anyone put one of these polyswitches in a 3000?

I got a couple of scsi cards here which have them on them.....

hiredesign wrote:Anyone put one of these polyswitches in a 3000?

I got a couple of scsi cards here which have them on them.....

Yes...
In mine.
In many others. ( and in other AKAI samplers too )
As a matter of course.
Only ever a poly switch replacement.
Not that stupid one time blow through hole mounted silicon fuse that AKAI insisted on using.
The polyswitches present on old SCSI cards can be pulled and used although I would recommend fitting a new component ... ( for the obvious reasons )

Rohan.

Is RXE075 from jaycar a good option?

Seems to fit the description on akai scsi faq.

hiredesign wrote:Is RXE075 from jaycar a good option?

Seems to fit the description on akai scsi faq.

Seems ?

Read the whole SCSI faq article again.

Look at the POLYSWITCHES on your SCSI cards.

RXE110
RUE110

An RXE075 will trip at too low a current.

Rohan.

i replaced it with a fuse from a pci scsi card and it is working awesome.

i got the RXE110 from jaycar but it looked too huge to use? it's about 2/3 the size of a aussie 5c coin.... rated at 22W?

peace

hiredesign wrote:i replaced it with a fuse from a pci scsi card and it is working awesome.

i got the RXE110 from jaycar but it looked too huge to use? it's about 2/3 the size of a aussie 5c coin.... rated at 22W?

peace

If the RXE110 from JayCar is in an oversized package then it is possibly a non TYCO/RAYCHEM sourced component. ( The real deal )
In true JayCar fashion... an inferior/possibly bootleg/questionable source component.
At least your MPC3000 SCSI port is now working properly again.

Rohan.

if i'm out of luck the fuse is out broken on my mpc.
does anyone has a picture where i can se the f901 ?

SR5 1A ← works!...(?)


- I bought a TR5 1,0 AT → mebe workz → similar to the above [elfa Sweden]
- I'll check it out!

kallback wrote:SR5 1A ← works!...(?)


- I bought a TR5 1,0 AT → mebe workz → similar to the above [elfa Sweden]
- I'll check it out!

1.0 AT should work ok.

Rohan.

Can someone give me a link to the exact fuse which needs to be purchased? I need to get one asap.

Thanks

Greetings, my apologies for dragging up an old thread, I thought it better than starting a new one on this same subject. Can anyone tell me if this specific fuse will do the job?

1.1A 30V 40A Imax PolySwitch Fuse Raychem RUE110

I found it by searching for RUE110 and it says it's a Raychem, but I'm not sure if the other specs (ie. 30v and 40a) are up to par. I've done a good amount of searching through the forum and have read the SCSI faq article but I want to be certain that I'm not ordering a fuse that will cause any problems with the MPC.

I'm having a friend who is more experienced in soldering and the like replace the fuse on my 3000 LE, but I told him I'd supply the part. Will post pics in the 3000 le thread asap. Thanks in advance for any help and I apologize if this specific info is listed elsewhere on the forum.