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TIU request-Barry

FM Former Member
Well I don't spend much time on the DCS forum I guess because I don't have any problems out of DCS but today I blew a fuse.

No big deal got out the manual and then I realized that to get to that fuse I had to take my wires loose (All of them) Dismount my TIU and take those 6 screws out.

Just to replace a single fuse? I would like to make a request that on future TIU's that the fuses be mounted externally . I'm kind of surprised MTH didn't do it this way to start out with. I would think they wouldn't want us trolling around in there any way.

Like I said I've been dealing with electronic equipment since the 60's that have had both screw in and plug in fuse holders mounted on the outside of the cabinet and it sure is a PITA to have to go in there just for a fuse.

David
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R RJROGR Forum Member
David, I suggest you go to external fuses and/or breakers. Fuse holders are cheap enough at Radio Shack. I also suggest fuses/breakers not to exceed 10-amps. In the long run, breakers are cheaper.

I agree that replacing internal fuses is not fun, as well as creating an opportunity to strip/wear out the plastic threads.
FM Former Member
quote:
Originally posted by RJR:
David, I suggest you go to external fuses and/or breakers. Fuse holders are cheap enough at Radio Shack. I also suggest fuses/breakers not to exceed 10-amps. In the long run, breakers are cheaper.

I agree that replacing internal fuses is not fun, as well as creating an opportunity to strip/wear out the plastic threads.


I don't think breakers are a good idea cheap or not . It's been my experience(And I have just a little bit LOL 35 years) that breakers just don't operate fast enough on electronic equipment. Fast blow fuses are the best way to go.
Given the huge circuit board in the TIU it wouldn't be any harder to mount a 4 fuse holder to the board and integrate it in a way that the cover could be removed and the holder would stay in place, but the fuses would be accessible on the outside of the TIU

It really doesn't make sense to have to have fuses protecting the fuses protecting the TIU just because it's such a PITA to get the TIU open to get to the fuses in the first place.

David
FM Former Member
quote:
Originally posted by NJCJOE:
I agree. Most of my screw posts are broken. The fuses should have been put under a removable panel like a battery cover.


Yea Joe,

I've seen a thousand amplifiers with screw in fuse caps and when they went to mini fuses ,the fuses are on the out side . I just wish they were on a TIU.

David
FM Former Member
quote:
Originally posted by Helichuck:
I don't know why they didn't use the circuit breakers from the Z-4000


Like I said Chuck . It's been my experience that most breakers just won't open up as fast as a fuse plus if the TIU didn't have any fuses and you didn't have a modern transformer like the Z-4000 you wouldn't have any fuses at all what you'd have is a blob of plastic.

Oh and who's playing the 5 string? I have a Gibson RB-4 and a 1934 Gibson RB-11

David
winrose46winrose46OGR Forum Member
For me, the fuses in the TIU are not an issue. I have had only blown one fuse in the TIUs with the Z4000, the Lionel 180 bricks, and the MRC Pure's circuit breakers pop way before the TIU gets damaged or the TIU's internal fuse gets toasted. I do not think that the TIU fuse is an issue and no more necessary to access than the antenna.
mikeporterinmdmikeporterinmdOGR Forum Member
I had a Z-1000 that would consistently blow the fuses in the TIU. I could never understand how a 5.5 amp transformer could blow a 20 amp fuse. Eventually, I just stopped using that Z-1000. It was messed up anyhow. The accessory and main weren't in phase. I always wondered if hot was wired wrong. Something like that.

I've never blown a TIU fuse since.

Mike
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