Re: Newbie potentially fried a circuit on AKAI MPK25

The USB and DC power it up just fine and the usb won't be moving around anytime soon. Powered on via USB all night with various settings that would inform me if it shut down at all and it went just fine. It is fixed for all intensive purposes, and learned a lot along the way and still have a lot to learn ahead of me. The missing pad is a mounting pad and it is in their pretty firmly.
Wish I started this hobby/skill years ago.

These skills will certainly pay for themselves even if I just repair my own gear....

Re: Newbie potentially fried a circuit on AKAI MPK25



something was wrong with them, and the solder was crispy. but i scrubbed them down with rubbing alc and they cleaned up nicely enough and the ICs seem undamaged. so that's good.

question: That stuffed that looked burned was what was "sizzling" when i powered it on using either the usb or the 6v DC connection. should i attempt to power it on with the 6v DC connection to test that this can power on normally even if not by using the USB which was obviously my intent of this project? doesn't seem...

Re: Newbie potentially fried a circuit on AKAI MPK25



Photos attached.

Am I missing a pad?
Do Q2 and C5 still look damaged?

Thank you for any assistance.

-Cart...

Re: Newbie potentially fried a circuit on AKAI MPK25



well i suppose i am creating those scraped boards. home grown



will do.

thanks
-cart...

Re: Newbie potentially fried a circuit on AKAI MPK25

I mistyped when I said I used a 9v DC, I used the correct voltage of a 6v DC. Just so everything is clear.

So I picked up an AKAI MPK25 (a controller for music) and got a great deal because the usb was ripped out of it, but i was able to power it up and figured since I was starting soldering around the same time this would be a great test to repair and profit if I didn't really get into it as I have a number of other hobbies.

So I ordered some type b usb female connectors to replace the broken one. I used flux because the type b usb has small holes that i was having trouble clearing out, but eventually got through it all and was able to mount (poorly) the usb to the board. In a rush...

Re: New Members - please post your introductions here

I;m responding here because i am clearly new here and soldering and in general and need to make a thread about a particular issue i am having. Soldering is hard..............................................................