Help! F2 /F2J Issue

[Zen Mod]

well , make up your mind ....... you're not having voltage at 240 ........ or on 9240 ?



change them both ,they're anyway peanuts price , vs. everything else

 

[kinku]

The boards are arranged up and down.I could not find any errors.
I am not sure how to proceed ZM

 

[kinku]

Wish Papa was around to help!

 

[Zen Mod]

we can give you guides and tips

footwork is all yours ........ considering that we aren't exactly in neighborhood

sorry , I can't check your pcbs , even if given so nicely ....... it seems I have some sort of mental blockade ...... able to do that only in vivo , on gadget I'm actually repairing

 

[Zen Mod]

take a hiatus for few days , do something else

go back with fresh mind

 

[needtubes]

I glean the following from the posts above:
1. You mirrored the layout between the two boards, and
2. You found that the ZTX550 was incorrectly installed (quite possibly due to the mirroring).

Have you checked that the MOSFETs are correctly installed? Notice on your mirrored (bottom) layout that the MOSFETs have their gate pin on the right, while the top layout has the gate pin on the left. You'll need to install MOSFETs rotated 180-degrees oln the mirrored board in order to get anything out of them. This, unfortunately, puts their mounting screw under the PCB, so you'll have to heatsink them before you solder them on.

 

[Zen Mod]

if that's the case , short wires between mosfets and pcb are the solution

 

[vvs07]

I agree. You might want to cut the traces on right channel's PCB leading to Mosfets and use short wires for those connections.

 

[Zen Mod]

no need for cutting anything

just rising pcb little more ,mosfet legs not bent , then short wires leading from legs to proper pads

 

[kinku]

needtubes,you are the savior!!!!
3D fooled me and the designer.Thanks a bunch for all of you.I will redesign the PCB. I think the guy who made it has to work on it.

 

[Zen Mod]

.......

are you absolutely sure that right pcb is flawless in design ?.........

 

[kinku]

Our beliefs are our biggest enemy!!!

 

[vvs07]

'Trust, but verify!'

 

[Zen Mod]

cut trice , measure once !

 

[kinku]

And this worked. Thank you all. More attention to detail next time.And it is wonderful as expected. Papa's most unique and wonderful creations.

 

[vvs07]

And this worked. Thank you all. More attention to detail next time.And it is wonderful as expected. Papa's most unique and wonderful creations.

Nice! Are you going to correct the right channel boards you previously shipped?

 

[kinku]

yup Vlad,I will have to get it made again. Option either whole new set for half price or just left channel for free. Please send me a PM.

 

[vvs07]

yup Vlad,I will have to get it made again. Option either whole new set for half price or just left for free.

I would opt for a new set at half price.

 

[kinku]

Nice ,Thanks .
Will contact you once new boards are here and tested( not this time) fully.

 

[Nelson Pass]

Most excellent results.