Atoll IN80 broken

Hello all,

I purchased an Atoll IN80 three months ago, and have been using it with a pair of B&W 706 S3 so far, until yesterday when the amp suddenly died. It blew F2 which I replaced, and then it blew F3, and kept blowing it, while keeping the initially replaced F2 intact. (Did it twice only, hopefully I haven’t blown anything else). From the four LED only two remain on (from top to bottom: on, off, on, off).

From what I’ve been reading so far, the amp looks like to be hypersensitive to overheating and not “suited” for long periods of listening (I’ve been running it for a whole bunch of hours, almost everyday, my wife and I almost took “shifts” on it, lol).

Since I already opened it, and previously installed the phono stage myself, maybe the warranty won’t cover it (not really sure here)

Do you any of you have a schematic and a basic troubleshooting guide, or values to be attained at certain components? And if anyone have experienced any similar issues and to what it might lead (maybe a shorted amp stage), I’d super grateful.

Thanks,

Ark
 
Just inform the seller and claim warranty first before doing anything else. You mention warranty yourself so I take the device is new and you are the first owner. A product dying after just 3 months is an unreliable device that should be covered by the 1:sellers/2:manufacturers warranty (also in the case of self installable modules as this is by design). Not asking is not knowing.

Only if the seller refuses or does not reply Atoll themselves could be adressed to:

https://www.atoll-electronique.com/contact/
 
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I read somewhere and saw pictures (maybe even on this forum) of the repair of this amplifier
if I remember correctly - the problem is fitting the power transistors on a single separate heat sink
The person who repaired it - replaced the small heat sink with one large one, shared with the elements responsible for temperature compensation (thermistor CNT_D on the attached diagram)
 
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Thanks for the reply,

Just did. Hopefully they will honor the request, but as I said before, many dealers disregard the claims when you “opened” the box yourself, even for upgrading the unit.

I asked for a basic troubleshooting protocol before, in case there was one, since some companies provide a fault isolation procedures for their service techs. I repaired PCB boards before, when ever they were humanly repairable, and this one of the reasons I bought the ATOLL.

But as you said, let’s see what the dealer says first…
 
OK, who repairs a new device himself when a 2 year warranty period is maintained by law in the EU?

One then has the high risk of making it worse and also has the cost. That is not a win-win case. In the case it is a construction failure one should definitely not attempt anything. It indeed does have separate small heatsinks per output device which is a design imperfection. Solving a design imperfection of a new product yourself is not a standard way of solving a manufacturers negligence/incompetence. This automatically overrules the normal warranty period as well as it is a design imperfection apparently leading to premature failure. In short: a shitty product. Then giving it back to the seller for a refund would be the only wise advice. I dealt with such "outside warranty" cases and high damage costs and one wins such cases. A consumer has the right to expect an amplifier to live longer than 2 years.

Only when it is bought from a private person/second hand then one is in the dark.
 
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This will also be about trust in a product. Even when seller/manufacturer would repair this error adequately... do you still trust it? I know I wouldn't.

The devices that have a series issue often turn out to have other issues. NAD M10 V1...Dyson....Bluesound....chinese contract work.

The shittiest products have the most persistently believing customers. Why I don't know but I notice that over and over. They solve it by either accepting error/failure or blame themselves (?!?) and some even solve the issue by buying ... the newest product by the same brand🙂
 
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I think nationality has something to do with it but in another way. Today's development is that the west does not want to pay the higher wages of their own skilled engineers and their products. So to compete with the Chinese one has to shed a few feathers here and there. For survival it is either that or have stuff fully produced in China and lay off workers. When I worked in China I saw many German brands starting "flagging out".

Ironically this will lead to known brand names with equally throw away quality as compared to the average chinese product. True old fashioned quality can be made by yourself with your own hands. Or to deliberately buy cheap stuff and improve that and see a joy in that.

Seeing yesterdays names on todays products and thinking all is OK is a misconception in general. Many don't even resemble the quality of before. Pity. The good old stuff turns to dust and the new stuff is already dust 😀
 
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