Stupid action #17

mjbrands · 12-12-2008, 02:03 PM

I just tried to verify my Align RCE-BL60G was correctly setup to output 6V to the electronics. I tried to do this by connecting a small extension lead to the bat port of my AR7000 and then use a multimeter to read the voltage off of the pins in the open connector. The only result was a small click in the ESC. Yipee, my hand must've slipped causing me to short the sucker.

There goes another $90.

Note to self: never do that again...

At least now I don't have to find out if the built-in BEC is good enough.

Uncle Remus · 12-12-2008, 07:05 PM

Awh man!! I'm sorry! I hate it when that happens. We all have a brain

now and then. I guess those are the lessons we'll not soon forget, eh?

Get back in the air soon.

Hoot

xptical · 12-12-2008, 08:29 PM

I took a servo extension cord and cut it. Then, I removed the signal wire. Finally, I cut the red wire about 10cm shorter than the black wire. No chance of shorting them out.

lavi · 12-12-2008, 08:47 PM

why spend 90$ when you can fix the esc ?
if you are not afraid of soldering, you should read this thread,
otherwise, send it over to me and I'll fix it for you (given it is the same problem as i expect it to be). I'm expecting a letter with 2 Mosfets (the part that usually blows inside the ESC) from MTDV, so I'll have 1 spare and I'll be happy to help,

conrod · 12-13-2008, 04:18 AM

WoW! That's really cool of you, Lavi.

mjbrands · 12-13-2008, 04:19 PM

Quote:

Originally Posted by xptical

I took a servo extension cord and cut it. Then, I removed the signal wire. Finally, I cut the red wire about 10cm shorter than the black wire. No chance of shorting them out.

This sounds like a good and fairly risk-free way to do it.

Aberdeen · 12-13-2008, 04:31 PM

Just add a BEC to it. CC makes a good one..
Or Have Lavi fix it for you.

mjbrands · 12-13-2008, 05:23 PM

Quote:

Originally Posted by Aberdeen

Just add a BEC to it. CC makes a good one..
Or Have Lavi fix it for you.

I tried that. I cut the red wire and connected the ESC to the throttle channel again. I then connected a battery to the ESC and a NiMH pack to the bat port of the AR7000 I was using. Nothing, no tones.

Quote:

Originally Posted by lavi

why spend 90$ when you can fix the esc ?
if you are not afraid of soldering, you should read this thread,
otherwise, send it over to me and I'll fix it for you (given it is the same problem as i expect it to be). I'm expecting a letter with 2 Mosfets (the part that usually blows inside the ESC) from MTDV, so I'll have 1 spare and I'll be happy to help,

Given my soldering skills and the equipment I have (80 watt soldering iron meant for plumbing), I think soldering SMD components is quite a bit out of my reach.

I'll PM you, it would be nice if the ESC could be repaired. I carefully opened up the ESC and the broken IC was indeed the 4425 MOSFET. I had a look at datasheets for compatible parts (Microchip and Micrel) and what surprises me is that it lists a 3A peak output current. I think Align lists 3A continuous with a 5A peak.

Mike66 · 12-14-2008, 03:23 AM

The internal BEC on the ESC likely provides the power for the ESC electronics as well. If this is the case and the MOSFET failed, then the ESC will not power up.

mjbrands · 12-14-2008, 09:12 AM

Quote:

Originally Posted by Mike66

The internal BEC on the ESC likely provides the power for the ESC electronics as well. If this is the case and the MOSFET failed, then the ESC will not power up.

That's what I thought/hoped.

neilius · 12-14-2008, 09:23 AM

Yep, did a similar thing here. Removed a servo wire and replugged it but I must have moved the pins across when plugging back in. Nasty smoke came out the esc, very silly thing to do, I should have just disconnect the batt first when replugging and checked properly..

mjbrands · 01-15-2009, 06:31 PM

W00T! I went to the post office today to pick up the ESC Lavi generously fixed.

It's great to have it back, thank you very much Lavi.

If anyone else screws up the BEC in their ESC and knows someone with SMD soldering skills, PM me - I still have some suitable replacement MOSFETs I'm willing to give away.

conrod · 01-17-2009, 06:56 AM

Lavi is Da Man! What I did to test mine was to use a male/male connector. Plugged one male into the rx and used my load meter to check voltage. I set the esc to 6v but when I put a load on it (1 amp) it held 5.8v. Maybe that's why people are getting away with not using a stepdown for tail servo. I use the step down regardless.

lavi · 01-17-2009, 01:49 PM

Great !!!

Very happy to help.
and even more - Very happy that you will be back in the air soon.

also, mjbrands sent me some extra mosfets, so if anyone else has a smoked BL60G, but no SMD soldering skills, I will be happy to help.
just send it over and I'll fix it.

Lavi

Guitar · 06-15-2009, 01:43 PM

Hi . I read your post on fixing the 60 amp esc's. I have 2 that I fried and I know I cannot fix them. Any chance you can help ?

Thanks -Jeff

12-12-2008, 07:05 PM	#2
Uncle Remus Registered Users Join Date: Feb 2008 Location: Houston, Texas	Awh man!! I'm sorry! I hate it when that happens. We all have a brain now and then. I guess those are the lessons we'll not soon forget, eh? Get back in the air soon. Hoot __________________ Trex 500 CF: 3x DS3517's, ds760 w/9257, 12T, Grey Dampers (for now) Trex 450SE V2: 3x HS65mg's, GY-401 w/9650, 12T, TB Dampers Blade CX2 (Doesn't everyone) To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. RealFlight G3.5 AMA#895105

12-12-2008, 08:29 PM	#3
xptical Registered Users My HF Map location Join Date: May 2006 Location: Robins AFB, Georgia	I took a servo extension cord and cut it. Then, I removed the signal wire. Finally, I cut the red wire about 10cm shorter than the black wire. No chance of shorting them out. __________________ She felt like someone of an ambiguous age that even neilg would approve of...

12-13-2008, 04:31 PM	#7
Aberdeen Registered Users My HF Map location Join Date: Sep 2007 Location: Las Vegas, Nevada	Just add a BEC to it. CC makes a good one.. Or Have Lavi fix it for you. __________________ In a world of compromise, some don't!

12-14-2008, 03:23 AM	#9
Mike66 Registered Users My HF Map location Join Date: Jun 2008 Location: Darmstadt, Germany (APO AE)	The internal BEC on the ESC likely provides the power for the ESC electronics as well. If this is the case and the MOSFET failed, then the ESC will not power up. __________________ T-Rex 500

06-15-2009, 01:43 PM	#15
Guitar Registered Users Join Date: Jun 2009 Location: California	esc rescue Hi . I read your post on fixing the 60 amp esc's. I have 2 that I fried and I know I cannot fix them. Any chance you can help ? Thanks -Jeff

12-12-2008, 02:03 PM	#1
mjbrands Registered Users My HF Map location Join Date: May 2008 Location: The Netherlands	Stupid action #17 I just tried to verify my Align RCE-BL60G was correctly setup to output 6V to the electronics. I tried to do this by connecting a small extension lead to the bat port of my AR7000 and then use a multimeter to read the voltage off of the pins in the open connector. The only result was a small click in the ESC. Yipee, my hand must've slipped causing me to short the sucker. There goes another $90. Note to self: never do that again... At least now I don't have to find out if the built-in BEC is good enough.

12-12-2008, 08:47 PM	#4
lavi Registered Users My HF Map location Join Date: Mar 2008 Location: Haifa Israel	why spend 90$ when you can fix the esc ? if you are not afraid of soldering, you should read this thread, otherwise, send it over to me and I'll fix it for you (given it is the same problem as i expect it to be). I'm expecting a letter with 2 Mosfets (the part that usually blows inside the ESC) from MTDV, so I'll have 1 spare and I'll be happy to help,

12-13-2008, 04:18 AM	#5
conrod Registered Users My HF Map location Join Date: Apr 2004 Location: Melbourne, Florida	WoW! That's really cool of you, Lavi.

12-14-2008, 09:23 AM	#11
neilius Registered Users Join Date: Feb 2008 Location: Hertford, UK	Yep, did a similar thing here. Removed a servo wire and replugged it but I must have moved the pins across when plugging back in. Nasty smoke came out the esc, very silly thing to do, I should have just disconnect the batt first when replugging and checked properly..

01-15-2009, 06:31 PM	#12
mjbrands Registered Users Thread Starter My HF Map location Join Date: May 2008 Location: The Netherlands	W00T! I went to the post office today to pick up the ESC Lavi generously fixed. It's great to have it back, thank you very much Lavi. If anyone else screws up the BEC in their ESC and knows someone with SMD soldering skills, PM me - I still have some suitable replacement MOSFETs I'm willing to give away.

01-17-2009, 06:56 AM	#13
conrod Registered Users My HF Map location Join Date: Apr 2004 Location: Melbourne, Florida	Lavi is Da Man! What I did to test mine was to use a male/male connector. Plugged one male into the rx and used my load meter to check voltage. I set the esc to 6v but when I put a load on it (1 amp) it held 5.8v. Maybe that's why people are getting away with not using a stepdown for tail servo. I use the step down regardless.

01-17-2009, 01:49 PM	#14
lavi Registered Users My HF Map location Join Date: Mar 2008 Location: Haifa Israel	Great !!! Very happy to help. and even more - Very happy that you will be back in the air soon. also, mjbrands sent me some extra mosfets, so if anyone else has a smoked BL60G, but no SMD soldering skills, I will be happy to help. just send it over and I'll fix it. Lavi

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