whatever
100 kW
- Joined
- Jun 3, 2010
- Messages
- 1,297
TURNIGY ACCUCEL 8150 is model name
So I was using an old turnigy charger the other day on a 7s 10ahr pack ( 24v nom), and I think I put the wires back to front, got a bigger than usually spark, a loud crack and smoke from inside the charger.
Charger got stuck on reverse polarity on screen, and simply wont work anymore.
So opened it up and I see one fet is blown ( obvious crack ) and suspect the one next to it also blown ( 2 fets furthest to left in pic below). I'll detail this repair as I did an icharger repair recently
https://endless-sphere.com/forums/viewtopic.php?f=14&t=49661&start=50
Below shows the case and inner board
one blown fet indicated by red arrow ( suspect the one next to it also), there is a small black electroytic cap in between the middle of all the fets, are they supposed to be black? I can remember only seeing red ones.
edit: postcript: at this point I had assumed all these 8 lots of t0-220 were mosfets.....wrong!
L7805cv is 5volt supply and I suspect nfa14 are schottkey diodes!
Its been a good charger, reliable over the years but not used daily. These were cheaper than the ichargers and looking at the fets is one reason I can see why, the fets are a mix up of all different ones.
Here is the list of what they are from left to right:
irfz44n( blown), irf3205, nfa14, irfz44n, nfa14,irf4905, L7805cv and irfz44n
Theres only 8 fets and they are almost all different.
So i'll go through similar repair procedure to the icharger and document what I find.
Plan to replace all the fets with irf3206 genuine from same aliexpress source as documented in icharger thread linked previously.
So I was using an old turnigy charger the other day on a 7s 10ahr pack ( 24v nom), and I think I put the wires back to front, got a bigger than usually spark, a loud crack and smoke from inside the charger.
Charger got stuck on reverse polarity on screen, and simply wont work anymore.
So opened it up and I see one fet is blown ( obvious crack ) and suspect the one next to it also blown ( 2 fets furthest to left in pic below). I'll detail this repair as I did an icharger repair recently
https://endless-sphere.com/forums/viewtopic.php?f=14&t=49661&start=50
Below shows the case and inner board
one blown fet indicated by red arrow ( suspect the one next to it also), there is a small black electroytic cap in between the middle of all the fets, are they supposed to be black? I can remember only seeing red ones.
edit: postcript: at this point I had assumed all these 8 lots of t0-220 were mosfets.....wrong!
L7805cv is 5volt supply and I suspect nfa14 are schottkey diodes!
Its been a good charger, reliable over the years but not used daily. These were cheaper than the ichargers and looking at the fets is one reason I can see why, the fets are a mix up of all different ones.
Here is the list of what they are from left to right:
irfz44n( blown), irf3205, nfa14, irfz44n, nfa14,irf4905, L7805cv and irfz44n
Theres only 8 fets and they are almost all different.
So i'll go through similar repair procedure to the icharger and document what I find.
Plan to replace all the fets with irf3206 genuine from same aliexpress source as documented in icharger thread linked previously.