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Hello out there..

I have a KA-2000 that is about 8 mo.s old.  when I disconected my equipment to re organise the system, I blew my fuse (unplugging before turning the unit off). I purchased 4a 250v 20mm slow blow fuses from Radio shack, but have blown 3 of the 4 already...  it blows immediately when I turn on the switch.  The reason for blowing 3 is I tried different chords and series of powering up (with and without surge protector..

It is the weekend and cant call mediasync, so I thought  I would ask if anyone else has had this issue before.  Did I purchase the wrong fuses?  Is it possible that the transformer has malfunctioned?  My paperwork for the unit does not even state the term or type of waranty, if any...

Any help would be helpful.

Thanks.
Bob

I'm hoping you read your owner's manual's spec section, but I doubt you did.  The fuse specs should be in there.

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Hello.. Yes, I did read the manual... it specs a T4A 250V.  T= timed or delayed  (slow blow) fuse.   It also has this on a sticker by the fuse cover.

One thing I did not state is the fuse I pulled did not have a #A on it..  it had 250V and ET4L.  Based on the T4.0A in the manual, I figure that is what the T4L was.

Also on the mediasync web site I found reference to a T8.0A, hence my questioning the type used.  

I found references to this type of problem being associated to a blown transformer, but I see no signs of burning.

I guess I am trying to find users that are familliar with this specific unit...   Since I did not want to start disconnecting leads in the unit to test further, I figured I would post here.

Thanks,
Bob

P.S.  So people dont assume I am just playing, I am a techincal specialist in the medical field and have 12+ years of experience troubleshooting medical testing and therapy devices.   I am just new to audio/video equipment...

The manual on RSQ web site said T8.........not T4

http://www.rsqaudio.com/support_usersmanual.html

OK.. I appreciate people trying to help, BUT I already said that...

My manual "specs a T4A 250V.  It also has this on a sticker by the fuse cover. "
I have the printed manual in my hands. AND there is a little sticker on the unit that says T4A 250V.

"Also on the mediasync web site I found reference to a T8.0A"
Mediasync is RSQAUDIO.COM.

Has ANYONE actually used this unit and experience the same thing?
OR a similar type of problem?

I dont mean to sound rude, but am a bit frustrated by the LACK of documentation with this unit and the responses really dont seem like you understand what I wrote.

Thanks again.

Bob

If its blowing a 4A/SB there is a direct short in the power supply (most power supplies now are designed "short-proof" a short in the load just crowbars the output current to 0)

Normal shorts in the power supply are the rectifier bridge or rectifier diodes, filters, or voltage regulators. A short can be found with an ohm meter..

Usually in a case like that I clip an ohm meter on the power supply out and unsolder and lift leads When the short goes away you have found the culprit..

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The power supply may well be the problem, but the cause may also be an overload protection device ( transistor package? , Chip? ).  However, there does seem to be a discrepancy in regard to the proper fuse rating. What you have in your hand says 4 amp, the site mentions 8.  There should be a metal power specification label somewhere on the unit, possibly by the AC input listing voltage/wattage requirements. Ohms law will give you the proper fuse requirement.  I'd try that first, as you gave no indications of power problems up to the first fuse blowing.....

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