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Burn mark on wire from a burned FET or from normal FET operation?


WalledSonic

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I removed my SCV-6000D to do some adjustments and noticed this burn mark on the underside of the main power cable (internal to the amp).  

I bought this amp refurb'd from dB-r a few months ago.

QUESTION:

Do you think the burn mark on this cable was likely caused when the amp was originally blown (transistor heat caused the burn on the cable)

OR

Do you think the burn mark is from normal transistor operation and I just need to ziptie it to a location away from the transistors?

I appreciate any helpful insight.  When I bought the amp and looked at it originally, I didnt look under this cable and therefore I'm not sure if it was there when I received it originally.  The amp is currently in perfect working order.

IMG_1362.jpg

 

The rest of the amp pics are in Amp Guts, in case anyone wants to see the rest of the amp.

 

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

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https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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I would suspect that the discoloration is from the previous failure.

91 C350 Centurion conversion ( Four Door One Ton Bronco)

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I'm with Shade on this. You got 2 decent burns, and 2 smaller patches. I'm guessing those are from shit blowing before, and thus causing, the repairs. You'd think there would be noticeable discoloration of the FETs in the same area if it was a recent heat issue.

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Im in line with the same thinking. Thanks for the replies. 

Chevy Sonic Wall (4) 15's on 10k Build Log

https://www.stevemeadedesigns.com/board/topic/209412-2015-chevy-sonicwall4-15s10klithiumlarge-case-hairpin-us-alts/

(4) Fi SP4 15's | (2) Ampere 5Ks | Active! | Arc KS600.2 & KS125.2mini | CDT Silk Domes | Silver Flute 8s | 240Ah JY | US Alts

Jeep Wrangler JK (4) 8's in a 4th Order Build Log

https://www.stevemeadedesigns.com/board/topic/209841-shadow-2016-jeep-wrangler-jk4th-order4-8sdc-35klarge-case-hairpin-us-alts/

IG @walledsonic

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