Help with Helder TK2050 board

[mixmechanic3]

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]

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]

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]

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