PopBloom Shannon s50 light issues

[geologeek]

If they are just connectors, then so be it, just seems strange they would add extra components rather than just solder bridge them or use wire.......

But as to the power, that is most likely where you soldered the resistor to replace the thermal fuse. If you look at where your power enters the board it says +38v and on connector 2 above it you can see the same +38v and GND next to it......

I would say it is the same going into the control section but you have probably blown a section of the track when you put a resistor in there and powered up.

So I would scratch off some of the white solder mask and find where you have a good section of copper track and then you will need to use a bit of wire here to your control section when you have found which component has blown. Definitely check the current drivers as there is something that is allowing too much current to flow and that's why things are blowing up.

 

[geologeek]

Sorry just re-read your post (still not had my coffee) and you said that there is continuity to ground.......so yes, something else has gone and pulling it to ground.

I'm afraid it is just a matter of checking all the components and seeing what has gone......also might be worth taking some components off the board to help chase the issue.

 

[bishoptf]

If they are just connectors, then so be it, just seems strange they would add extra components rather than just solder bridge them or use wire.......

But as to the power, that is most likely where you soldered the resistor to replace the thermal fuse. If you look at where your power enters the board it says +38v and on connector 2 above it you can see the same +38v and GND next to it......

I would say it is the same going into the control section but you have probably blown a section of the track when you put a resistor in there and powered up.

So I would scratch off some of the white solder mask and find where you have a good section of copper track and then you will need to use a bit of wire here to your control section when you have found which component has blown. Definitely check the current drivers as there is something that is allowing too much current to flow and that's why things are blowing up.

I thought that where I soldered the resistor was where the power came into control board but why would I not get continuity with the traces on the other side of the board. Thats what has me confused, I thought if it was 24v coming from the other side of the board I would get continuity and I don't. I took the one main diode off ss210 and get a reading of .326 one direction and nada in the other direction. Is there anyway for me to test those connectors going to the main board to the control board to see if they are a diode vs straight wire? They honestly look like bread board header pins.

I also tried tested the continuity of the voltage regulators all of them on pin1 if that is on the left side have continuity to ground.

Appreciate all help...

 

[geologeek]

The diode might be alright a scottky diode expect voltage drop can range from about 0.15 to 0.45v.

As to the connections that I thought were possible diodes........take one off and see if it is just a pin header they have used as a bridge.

Pin 1 of the current regulators going to ground does not sound good as this should be vdd, so there is something that is connecting vdd to ground.

As to power across the board, can you not trace the track? You might not be getting continuity across the entire board if there is a burnt section of copper track or there is a component that has also blown.

Can you get some more good photos of the entire board and maybe I can get it on my pc and have a good look.

Did you try the MOSFETs to see if they are fine?