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Unlike the Summits, I don't think this is a common part that is available from parts suppliers, so you'll have to get it from ML. The board has a ML logo on it.

Happiness is when things are working as they should be. The heat comes mainly from the transformer. It gets too hot to touch. With 2 of these 'heaters' next to it, the back plate gets very warm after a while at the spot just above the dimmer control. Even when on standby, it looks like the...

pambs, I hope you got your bass speakers working again. It happened to mine once when I forgot to connect the speaker cable to the board after an ICE amp replacement exercise. Duh. 🙄 Low hum (even without input connections) appears to be a normal feature of all ML bass speakers and woofers...

The Descent_i emerges from standby mode automatically upon receiving an audio signal. There's no need to "switch". If you are certain the problem doesn't come from your processor, I suggest you contact ML service. Scott Gribble or Brian Bailey are very helpful, though there might be a delay in...

It exactly the same board that ML will supply to you. In fact, it was Scott himself who suggested that I could get it for a lot less on the open market.

Not as far as I can remember. I have had the misfortune to require a complete change of all the circuit boards sometime ago and don't remember seeing any fuse on the power supply board. Edit: Appears our posts crossed. Congrats on your solving the issue. Enjoy!

Pamps, Is yours the Summit or Summit X? Does your amps feel just as warm, or even hot, whether in active or in standby mode? The spot to feel is just above the LED control at the back panel. I am trying to determine if the standby mode circuit on my speakers are defective even though the LED...

Pambs, FYI, the Summit amps (ASC 200 from B&O) are easily obtained from open market suppliers like Parts Express https://www.parts-express.com/icepower-200asc-class-d-audio-amplifier-with-power-supply-module-1-x-200w--326-208 and they cost a lot, lot, lot less than from ML. I recently had to...

Nothing is wrong with my house wiring. The trip issue was brought to ML's attention. They confirmed on paper (I still have it) that there's a surge of a total of 143.118 A during the first 0.003 sec when both speakers are turned on together. The surge drops to 42.936 A at 0.01 sec. That's...

Don't know whether UPS is suitable for the Summits. When I first had mine, it used to trip my mains fuse whenever I power them on because of the very high transient. So, now I power them on one at a time. I really don't like to power off the speakers every time I turn off the system. I find...

The sub was already about 8 years old in 2014. ML shipped me all the speaker units, circuit boards and wire harness. It was a back breaking job working in the confined space inside the enclosure screwing everything in place - I didn't trust my dealer's men to do a proper job. Don't really...

Count yourself lucky, Khenegar. Look at what happened to my Descent-I. One of the 3 ICE amps caught fire. Besides disabling the other 2 amps and the PS board, it also blew up all 3 speaker units. The only item salvaged was the enclosure. Maybe I am jinxed. :wtf:

Most subs are self powered with ICE amps these days. Mostly because they run relatively cool and so do not require heatsinks.

Hi Guys, Does anybody here have the schematics for ML Summits? I am toying with the idea of bypassing the internal ICE bass amps and using external amps to drive the bass units. Thanks.

He didn't. Just said that it's unusual that the ICE amps should fail slowly over time instead of simply stopped working. I am concerned that the new amps won't last long as these new version "K" is specified to draw 45 watts of power compared to 39 watts for the earlier versions. And they...

If I suspect the bass is lacking, that's what I do. Decoupling the stat panels from the bass at the input makes for easier listening test. For confirmation, I'd do an ARC sweep. The thing is, the ICE amps don't simply stop working all of a sudden; they get softer and softer over time, so you...

Just an update on the Summit bass issue. Scott Gribble, ML's Service Manager, was most helpful. He shipped 4 power amp boards to me for replacement. As you can see, the latest ARC sweeps are back to normal. You guys stay safe, ok?

Yes, that is exactly what I found. It did occur to me too why all the 4 ICE boards (looks like they're from B. & O.) should fail similarly. I am no expert at reading circuit boards, but it looks like each board has its own PS as I do see a connector labelled 100-240vac 50/60Hz. I did managed...

Thanks for your info, Khenegar. I'll email them. I think removing the stuffing is a great idea. The back compartment is easy, but the front is something else as the speaker behind the grill will have to be removed. I believe there's another circuit board in there too. Wonder who the member...

Actually, Jon, the climate heat here has never been a factor. My room is cooled with AC and even the big Karan amp is just warm to touch even after hours of use. The Summits use class D amps without the need for heatsinks. When I opened the rear panel, even with the tight enclosure, the...