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joust

Member Since 02 Dec 2004
Offline Last Active Feb 20 2015 09:45 AM
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Posts I've Made

In Topic: DC 300A voltage conversion question

19 February 2015 - 04:56 PM

Wow! First time I hear of defective leds caused by elecrrostatic discharge! Will watch out for this! :)
Need another amp? Can I recommend the XTI1000? I use a 1000 in my studio. Also has a lot of DSP power!

Alain

In Topic: d-75 35 volts at ch 1 speaker

18 February 2015 - 01:02 PM

Was R116 open or 'shorted'? Very rare that a resistor can become 'short', except if it is a wire! :lol:

Peace!

A.

In Topic: Xti 4002 dead beyond repair?

18 February 2015 - 01:00 PM

The Crown three years warranty always starts with the date that YOU bought the amplifier, as long as it was purchased from a reputable Crown authorized dealer. The date code on the serial number label is an indication of the date on which the unit was manufactured. It is also an indication for the service tech to evaluate if the unit should be treated under warranty or not. So, if the warranty seems expired by the date code, find your invoice and confirm that the purchased date is within the prescribed time period.

Note : If the amp was purchased 'outside' of the country (ie. purchased via eBay, Kijiji, Amazon), the only alternative for warranty repair would be to send it back to the USA.

A.

In Topic: d-75 35 volts at ch 1 speaker

17 February 2015 - 02:12 PM

Bonjour Rocko,

Since you can measure the 35V at the output, this implies that :

- you don't have any shorted output devices (or else, the mains fuse would blow!);
- the fault is in the negative half of the output section; (I assume that the main IC has been checked and is OK);
- the fault is with the pre-driver or driver section; while powered down : measure resistances (especially low value resistors) and verify transistors.
- verify the R116 and R117 (180 and 5.6 ohms);
- while powered up : measure B-E junctions voltages in the negative side ( normal : .4 to .6V);

I hope this will help!

Alain

In Topic: Xti 4002 dead beyond repair?

17 February 2015 - 09:52 AM

I have mentionned in another post that if you are very 'kind', you could politely ask Crown if they could repair the unit under warranty since the warranty was up barely a few months ago. Please contact Crown USA either via phone (toll free) or email and explain to them your situation and that unfortunately, the warranty ended in December and do ask if THEY COULD HELP YOU with your difficulties with their contact in Australia. 2700$ is horendous! You could buy two XTI4002 on eBay for that price and be shipped prepaid to boot!
If push should come to shove, perhaps you could 'buy' the main board from Crown and get it shipped to Australia. This too might be less costly.

Cheers!

Alain