OVP ICP DC to DC Buck Converter

[axis937]

Hello everyone. I am new to electronics and just got my first Buck n Boost . To play safe for the first time, into a USB charger 12V 1.5A. On the converter screen, no matter what adjustments i do to the settings even under memory, nothing seems to change the voltage. Its like its got its mind on its own. I decided to try it with a RC car battery 7.2v 1100mah and received the same results.  i have nothing plugged into the output and yet i see the Current Values.
Attached are the pictures. Errors i am getting is OVP and ICP at times. I did not plug in anything on the output side.

Any solutions to this?

[thm_w]

If its reading values with nothing connected on the output its possibly damaged.

Do you have a multimeter to measure voltage at the input and output? And current at the input?

[axis937]

Hiya, thank you for the reply. I managed to solve the OVP and ICP issue by reading up on the settings based on what is the Power Supply voltage and current that is incoming.

to answer you question, multimeter shows the right incoming value and its also right on the converter LCD.
On the outgoing part, there is no load connected to it. Multimeter readings shows 0V as well. BUT...on the buck converter its showing reading.
This is brand new out of a box. Unfortunately i threw away the box and wont be able to return it.

Any idea what could be wrong. any advice is appreciated.

[Phil1977]

Did you connect just the battery as a voltage source to the input and to nothing else? These units like you have one are prone to ground loops of hell (tm) if input and output circuitry are anyhow in connection.

A second thing is: Also these DC/DC units are cost optimized by transferring production steps into software development. That means, the first time they are powered up, or maybe even every time they are powered up, they "re-tune" their regulation loop by the microcontroller. Current regulation seems even to be done completely by software. It could be worth a try to power cycle it a few times, connect it to another PS and slowly increase input voltage.

And of course, check the PCB for bad solder joints and blown caps...