Arjen's helder TA2020 MKiii went fault :( - diyAudio
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Old 10th February 2010, 08:07 PM   #1
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Default Arjen's helder TA2020 MKiii went fault :(

Dear everyone,

my TA2020 MKiii from arjen's helder goes fault after i shorted the speaker cable together. Anyone can help me?
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Old 10th February 2010, 08:37 PM   #2
Bone is offline Bone  United Kingdom
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Sorry but you need another one
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Old 10th February 2010, 08:39 PM   #3
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from TA2020 datasheet:

O v e r - c u r r e n t P r o t e c t i o n
An over-current fault occurs if more than approximately 7 amps of current flows from any of the amplifier output pins. This can occur if the speaker wires are shorted together or if one side of the speaker is shorted to ground. An over-current fault sets an internal latch that can only be cleared if the MUTE pin is toggled or if the part is powered down. Alternately, if the MUTE pin is connected to the FAULT pin, the HIGH output of the FAULT pin will toggle the MUTE pin and automatically reset the fault condition.

Yea, i know it can be solved, but i can't even understand the procedures and steps
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Old 10th February 2010, 10:46 PM   #4
wwenze is offline wwenze  Singapore
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Power-off your amp basically. If this doesn't work your amp is fried.
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Old 11th February 2010, 01:51 AM   #5
audi0 is offline audi0  Australia
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arjenhelder_electronic has replacement chips available, it shouldn't be too difficult to swap. Not having a desoldering station, I just use desolder braid.
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Old 11th February 2010, 01:57 AM   #6
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May be arjen can help?
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Old 9th April 2010, 09:18 PM   #7
nige838 is offline nige838  United States
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the mute/sleep circuit must be completed...look on the datasheet for the pin number...On the Lepai, the power switch was the mute/sleep switch, so if you had a fault, you could just turn it off and back on, but I'm not fimiliar with the MKIII...

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Old 10th April 2010, 01:05 PM   #8
mattnz is offline mattnz  New Zealand
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Yeah you should hit the guy up that sold it to ya
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Old 17th September 2010, 05:41 AM   #9
tuyen is offline tuyen  Australia
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I purchased 4 of these modules and I'm not sure what I'm doing wrong.

How I have it hooked up is 12V car battery going into the DC input. Am getting a red light with 2 out of 2 of the units I have hooked up so far.

Does anyone know what the red light means? and is there any form of instructions on how to properly wire these modules up? I thought it was quite self explanitory but I guess not for myself! Do the voltage trim pots need to be adjusted at all?

I sent Arjen/Stacy an email already but have not got a reply.

Thanks in advance all!
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Old 17th September 2010, 06:05 AM   #10
defect9 is offline defect9  Ireland
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@tuyen: if you have only one light turning on, then it probably means you put the red LED in the power on thingy. one LED is white, one is red (or for mine, that's what happened). if it stays on constantly, but still plays perfectly, then there is nothing wrong.

it's nigh-impossible to tell which LED is red, and which is white, until you run power through them.

i would venture a guess that when you when you turn it off that the white light flashes briefly. swap the LEDs.
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