Help with Helder TK2050 board

mixmechanic3 · 4th January 2011, 01:45 AM

I recently received 4 TK2050 boards from Arjen Helder. First impressions were very positive. After only about 10 hours of use, one has no output. The 7805 regulator gets very hot immediately. I will pick up another regulator tomorrow to see if it helps. Does anyone have experience with a similar issue. Is the amp history?

thanks

julcat · 4th January 2011, 03:13 PM

I have 4 TK2050 boards from arjen and they all work without any problems, in general Arjen's products have good reputation of quality and sound.

Homl · 8th January 2011, 03:04 AM

Have you double check for DC offset at the output?

One of my boards had a significant amount of DC offset. I just turn the little blue pot to set it back close to zero.

ArjenShenzhen · 9th January 2011, 04:27 AM

Hi there, Mixed mechanic,

Have you contacted me already for this problem ?

Ill help you out of course. i've noticed that some of the board of the previous lots have some fall-out issues, so of course your problems fall within the usual warranty.

Greetings!

Arjen Helder

4th January 2011, 01:45 AM	#1
mixmechanic3 diyAudio Member Join Date: Aug 2006	Help with Helder TK2050 board I recently received 4 TK2050 boards from Arjen Helder. First impressions were very positive. After only about 10 hours of use, one has no output. The 7805 regulator gets very hot immediately. I will pick up another regulator tomorrow to see if it helps. Does anyone have experience with a similar issue. Is the amp history? thanks

9th January 2011, 04:27 AM	#4
ArjenShenzhen diyAudio Member Join Date: May 2008	Hi there, Mixed mechanic, Have you contacted me already for this problem ? Ill help you out of course. i've noticed that some of the board of the previous lots have some fall-out issues, so of course your problems fall within the usual warranty. Greetings! Arjen Helder __________________ Always check the power supply... and my spelling...

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4th January 2011, 03:13 PM	#2
julcat diyAudio Member Join Date: Sep 2009	I have 4 TK2050 boards from arjen and they all work without any problems, in general Arjen's products have good reputation of quality and sound.

8th January 2011, 03:04 AM	#3
Homl diyAudio Member Join Date: Nov 2003	Have you double check for DC offset at the output? One of my boards had a significant amount of DC offset. I just turn the little blue pot to set it back close to zero.