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Old 28th October 2014, 07:17 PM   #1
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Join Date: Oct 2014
Location: Ukraine, NovaKahovka
Default Arcam alfa 10 Help!

Hello!
In my amp problem with the microcontroller HT48R30.
No diffraction on the team. No indication display.
Voltage good.
Capacitors replaced, replaced quart.
If the chip to heat up a little dryer - amp is fully working. After 1-3 minutes again faulty.
I can buy a chip. But where to get the program teams?
Thank you!
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Old 29th October 2014, 01:45 AM   #2
Bare is offline Bare  Canada
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Don't know what to say,
Start here:
A) the Amp is Poor sounding, when brand new/working, far below what it's purchase cost would imply.
B) they have added in sooo many 'attract buyers' nonsense features that repairing it is a factory only repair.. and reputedly the repairs are not overly compentent.
Frankly I'd give serious thoughts to cutting your losses and moving on..
I have.
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Old 29th October 2014, 04:07 AM   #3
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Location: Coffs Harbour
Since the micro is still functional but heat sensitive, it could well be poor soldering or socket contacts that are causing your problem.

Whatever the situation, if you have suitably fine, temperature controlled soldering equipment, fluxed solder braid and some liquid flux, it may be good to rework the soldering and any support devices that also may have been heated by the dryer.

Re flash program: I understood from a similar old thread that programmed chips were (once) available from Japan. Other than that, you would have to contact Arcam Service directly to get advice, as they are "not field programmable", according to the manual.
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Last edited by Ian Finch; 29th October 2014 at 04:33 AM.
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Old 29th October 2014, 06:15 AM   #4
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Thank you Bare.
Thank you Ian
Soldering station with temperature control is, I used it at work.
All the elements around the chip replaced, checked all the soldering.
Chip soldered into the PCB without sockets.
The result is the same ...
You need to replace the chip.
Where you can buy the soft?
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Old 29th October 2014, 07:00 AM   #5
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Location: Coffs Harbour
The straight answer again is you can't simply buy it. The manufacturer states these are not field programmable. Even if the basic chip is designed to be flash programmed, that is Arcam's position on supplying firmware already on-chip or reinstalled by them.

I understand Arcam also distribute a programming module and software to their service agents for directly coupling to the boards in the their FMJ series products, at least. This means programming won't be freely distributed on the internet.

Contact Arcam Service direct or at least ask an Arcam authorized service centre somewhere in Europe about this, if there is none in Ukraine. Obviously, they wish to control the service of these products and charge for it, including the IP.
Perhaps others with experience like yours will have more specific comments to add.
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Old 29th October 2014, 07:17 AM   #6
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Join Date: Oct 2014
Location: Ukraine, NovaKahovka
Clearly.
It's insulting.
Service in not to Ukraine.
Then this amplifier has a path in the trash.
Then do not be sorry for last experiment.
I suspect that is not normally works clock. I will try to make the external oscillator and the signal at the point of quartz.
This is the last thing that can save the amplifier from the tank waste.
Thank you.
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Old 7th November 2014, 01:47 AM   #7
Bare is offline Bare  Canada
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Unfortunate.. That's what I was trying to get you to understand.
Arcam has ..imo..devolved into a Joke manufacturer.
Many of the 'surviving' Audio Weenie Shops will no longer carry the brand.
Genuine Shame.. that it has come to that.
But IMO 'British' is generally viewed as having no implicit assurance of quality .. these days.
Silly place is all about money laundering and local consumption economy.

Last edited by Bare; 7th November 2014 at 01:54 AM.
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Old 7th November 2014, 01:56 AM   #8
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If the PIC chip is functioning some of the time it could be the crystal / resonator or one of the small caps associated with it.

You might find that the caps are integral to the oscillator chip.

If you haven't got the schematics they are available at HiFi Engine - Owners and Service Manuals

Last edited by KatieandDad; 7th November 2014 at 02:09 AM.
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