Alesis ra150 overheat - Alesis Audio Players & Recorders

Question edited for clarity, full 'make model (what it is)'.

There are no Firmware Updates, just Software. Firmware is what happens before the software loads.

Updating The ML9600 Masterlink Operating System

https://7132afa424c2f1a2ab6d-54d68a14e2e7c1f76563a2d8c3e9fd82.ssl.cf2.rackcdn.com > ...
PDF
Updating the ML9600 Masterlink Operating System. In order to update the system ... Go to: http://www.alesis.com/masterlink. 2. Click on, Docs & Downloads.
3 pages

Masterlink ML-9600 - Alesis

https://www.alesis.com > products > view > masterlink-...
Presenting the new MasterLink ML-9600 two-track hard disc recorder - literally, the state-of-the-art in do-it-yourself mixing and mastering systems.

..

Ask direct. It isn't available online. Just specs, advertising and reviews.

Alesis Cadenza

https://www.alesis.com > products > legacy > cadenza

Alesis Cadenza - 88-KEY, HAMMER-ACTION DIGITAL PIANO. ... Cadenza. Overview: Features: Specs: Downloads: Videos and images ...

Alesis Cadenza digital piano review

https://www.digitalpianoreviewguide.com > alesis-caden...

Simply put, the Alesis Cadenza is not a quality digital piano. With its lack of durability and constant maintenance issues, along with a horrid sound quality, ...

Cadenza - Rackcdn.com

https://7132afa424c2f1a2ab6d-54d68a14e2e7c1f76563a2d8c3e9fd82.ssl.cf2.rackcdn.com > ...

PDF 88 hammer-action keys for full piano range with graded, weighted feel ... The Cadenza is an 88-key, graded hammer-action digital piano with the sound,.
1 page

..

No, it will work for some time, but will eventually overheat and cause damage. Spend the $10-20 and have piece of mind.

You first need to check whether the relay you have used as a replacement has the same voltage on the coil as the original. You have wisely chosen one with a higher current rating on the switch contacts, which is a very good idea, but I suspect you've not looked at the coil voltage to ensure it's the same. For example, you may have installed a with a relay with a 12 volt coil, while the original had a 24 volt coil. Result? the new relay coil will overheat, as will the driver transistor.
A simple test is to operate the amp until it feels hot, TURN IT OFF, quickly remove the top cover and see if the new relay feels hot. If it does, you need to source a replacement relay with the correct coil voltage. Usually the coil voltage is written on the body of the relay somewhere, so you should be able to identify it on the original unit airly easily

Hi.
I assume you mean the D4 module:?

No, to make this connection correctly you need a pre amp. you can find them online for about 25 and up. your ipod does not have a pre amp section and is sending a very weak signal to your amplifier. A pre amp is the fix. Hope this helps

Yes it is Vista comaptible, read here; http://www.alesis.com/contentmgr/showdetails.php/id/1168/tt/5

your right output component (transistor or integrated circuit needs to be replaced)

My Alesis SA-300 started the cutting out when at moderate levels some months ago... Well, Radio Shack has instant gratificaion for those who have one in the neighborhood. Part number 275-249 will do the trick!
http://www.radioshack.com/product/index.jsp?productId=2062483

I replaced the Dong Woo part with the Radio Shack item and the amp is back to its old self... maybe even a little better. Loud, clean and steady.

Thanks to all you who have contributed to this thread.

Steve