Barracuda Legend Kit Problems

[Koala]

Hey guys i joined a few days ago with the hope that i could sort my issue without raising the typical beginner post by reading others issues and checking out my board but i have not been successful yet. I bought a Barracuda Legend Kit and have put the components on the board as per the numbers i have made sure the 2222 (metal can type) is in the correct orientation i have taken it off the board to check that it isnt in short with one of the other pins (its not). I have set 5534 pin no 6 to 0v. i have a whine/tone when i plug the batt in (12v) and the tone gets louder if i turn the pot up which is what i would expect but when i put the coil on the Mosfet goes mental and over heats in 3 seconds i have cleaned and cleaned again to get rid of any rosin flux shorts. I am stumped as this is where my skill runs out, is there any good folk that would be willing to help me?

Exactly the problem I had with a problem 2222 (I had order the right part but an equivalent had been sent. I did not check and fitted 180 degrees out)

If you are using a TIP127 if you detector starts to work at lower volts I would suspect the 2222 or surrounding components.

[kt315]

dso138 DIY kit... i am not in course of a video in english... did see this nice manual... but in russian.

https://www.youtube.com/watch?v=PBNy_B_l0OA

[FatBob]

Well the hot FET indicates it is on for too long. You need to check these components;



Remove the coil to save the FET if you turn it on. An oscope would make things a little easier.
I just bought one of these for around $20, it is one channel only but might help.

http://www.ebay.com/itm/DSO138-2-4-TFT-Digital-Oscilloscope-Kit-DIY-parts-1Msps-with-probe-STM32-/171906349298?hash=item28066ab8f2:g:AQUAAOSweW5VMWn-

[kt315]

http://www.ebay.com/itm/Vintage-Kikusui-Oscilloscope-COS5020-20MHz-2-Channel-Working-Unit-/331772766726?hash=item4d3f32aa06:g:JygAAOSwuAVWt6fL

[Impulse]

Hi no i dont have a scope only a multi meter.

[kt315]

hope dies last..... do you have an o-scope?

[Impulse]

Hey guys i joined a few days ago with the hope that i could sort my issue without raising the typical beginner post by reading others issues and checking out my board but i have not been successful yet. I bought a Barracuda Legend Kit and have put the components on the board as per the numbers i have made sure the 2222 (metal can type) is in the correct orientation i have taken it off the board to check that it isnt in short with one of the other pins (its not). I have set 5534 pin no 6 to 0v. i have a whine/tone when i plug the batt in (12v) and the tone gets louder if i turn the pot up which is what i would expect but when i put the coil on the Mosfet goes mental and over heats in 3 seconds i have cleaned and cleaned again to get rid of any rosin flux shorts. I am stumped as this is where my skill runs out, is there any good folk that would be willing to help me?