Fuses Blowing Left and Right

Jag42

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It's very rare for the cpu to fry with a bad head. This is the only system that has fried multiple cpu's.
 

oktavf

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It's very rare for the cpu to fry with a bad head. This is the only system that has fried multiple cpu's.
I believe the head literally shorted itself internally and kept looping the voltage back into the CPU and thus killed it. Sh*t happens glad you two got it resolved and replaced in a timely manner! :)
 

OBeerWANKenobi

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Personally, I'd start suspecting the install at this point. Possibly some cable damage where insulation may have been stripped off during installation or at a later date.

Get the continuity tester out.
 

RaggedEdge

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When I had a bad head, it would blow the fuse, exactly like it should. Never caused damage to the CPU. The cigar adapter should have a fuse in it too, did it not blow?
 

Matthewstorm

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Not sure how any cable damage could have occured. We were able to test fire all the heads and found the 1 bad sensor that was causing the CPU to go nuts. Unfortunately, that's when it died. Have another CPU arriving tomorrow. Will be triple testing all lines before installing. Hats off to Jared he's a super standup guy.
 

Matthewstorm

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When I had a bad head, it would blow the fuse, exactly like it should. Never caused damage to the CPU. The cigar adapter should have a fuse in it too, did it not blow?
Could never get the cigarette lighter to power the CPU.
 

Matthewstorm

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Personally, I'd start suspecting the install at this point. Possibly some cable damage where insulation may have been stripped off during installation or at a later date.

Get the continuity tester out.
It's not the install, I can assure you of that. My installer is the best in the Raleigh/Durham area. Many dealerships take their new cars to him. I'm there at all times during the install and he shows me what he's doing. No cable was ever stripped out. Everything was installed professionally. The system has been working fine since install in October. Then suddenly bam! zzzzt! I've never been hit with any LIDAR and only tested the system 3 times. Definitely puzzling. But with that bad sensor line inserted I watched it blow the CPU and smoke puff out.
 

Deacon

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The system has been working fine since install in October.
I understand that it’s probably a defective head that’s causing the problems. But as you drive your car, vibrations and movement can cause any sharp edges to slowly eat through the insulation around the cables little by little (why you use rubber grommets). It won’t show up immediately. If the only thing you replace is the head, and it’s still burning out CPUs, it may well be that the cable leading to the head is the issue rather than the head itself.
 

Matthewstorm

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Nothing else has blown as we were not able to test the newly installed head. I'll make sure we fully inspect all cables before plugging in the new CPU.
 

acsclio

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It happen here a video of bad sensor


I have almost 2 bad cpu and 4 sensor.

Some componen of the sensor died and the sensor only detec no jam. The diode not fire..

Enviado desde mi RNE-L03 mediante Tapatalk
 

riseboi

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Where exactly was the power tapped in? And do you have access to a cigarette lighter power cable for testing the new CPU? If so, I would power and test the unit/sensors with that first.

I can appreciate you have a high opinion of your installer and his work, but I do think it a bit premature to absolutely rule out the install.
 

Matthewstorm

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Power tap is a standard power tap. That's install 101. Plugged the new one into the lighter today. Got power. One thing I noticed is the CPU is now called Defender. All the other CPU'S were just called LE. Will install and inform on Monday.
 

Jag42

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Power tap is a standard power tap. That's install 101. Plugged the new one into the lighter today. Got power. One thing I noticed is the CPU is now called Defender. All the other CPU'S were just called LE. Will install and inform on Monday.
I'm Glad its working. The new Defender lite App recognizes the cpu's as Defender now, LE was more for IOS,now IOS is on it's own.
 

riseboi

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Power tap is a standard power tap. That's install 101.
Oh, ok. Got it. I guess my question was not specific enough. Thanks for the lesson, though! good luck
 

Bulletbling

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I understand that it’s probably a defective head that’s causing the problems. But as you drive your car, vibrations and movement can cause any sharp edges to slowly eat through the insulation around the cables little by little (why you use rubber grommets). It won’t show up immediately. If the only thing you replace is the head, and it’s still burning out CPUs, it may well be that the cable leading to the head is the issue rather than the head itself.
Very true. At least one whole aircraft has gone down simply because of wiring being chafed on metal (fire) so I could imagine it causing an issue here, but glad to hear it's all resolved.
 

Matthewstorm

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So, checked all wires, power tap, and voltages. Everything checks out fine. Cables are a-ok. Slowly plugged everything in one connection at a time. Woo hoo. It all works. Connects to JBV1 instantly. Ran laser tests on all heads. Right on the money. So, I'm very thankful for Jared's diligence in helping me with this issue. But it's crazy that one bad sensor can do so much damage.
 

oktavf

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So, checked all wires, power tap, and voltages. Everything checks out fine. Cables are a-ok. Slowly plugged everything in one connection at a time. Woo hoo. It all works. Connects to JBV1 instantly. Ran laser tests on all heads. Right on the money. So, I'm very thankful for Jared's diligence in helping me with this issue. But it's crazy that one bad sensor can do so much damage.
Much like 1 flat tire, it'll ruin your whole day! ;)
 

astronuts

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I had a fuse blow on me I think yesterday. Looked down and didn't see the blue light on, but I remember hearing the voice announcement the day before. Just checked now and it was indeed the main inline fuse. I will get a replacement after work. Wiring in my car is spot on. Installed by both myself and an OCD electrical engineer. Haven't been targeted by LIDAR or done any testing of the system.
 

Matthewstorm

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Let's hope it's only a fuse and not the CPU.
 

astronuts

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I put in a fuse, started the ignition and the blue power light started blinking, then went dark. Looked at the new fuse and it was blown.
 

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