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Straightening Bent Fins

I purchased a huge Krell amp that arrived yesterday! (Used) It all seems OK, but it shifted in the box, and one of the fins was bent. You may as well know it was the one in the front! This is a 130 pound amp, so it's got a pretty good curve in the fin. I know this is a fairly common thing to happen during shipping. It's not severe enough that I don't want the amp, I'm not gojng to send it back over one bent fin. But I ask everyone out there, has anyone ever had any luck straightening a fin? Any advice on the best way to go about it? I don't want to break it off, or scratch it up. Any experiences good or bad, let me know what you think. 
alpha_gt
erik_squires
5,268 posts
 
Depends on how thick it is! Thicker = more likely to break.

Use something like the Sears Robo Grip pliers which will give you the most control and leverage.

Use a towel or similar in between the pliers and fins to protect finish.

Instead of trying to fix it all at once, do it in increments, approaching your goal.
ct0517's avatar
ct0517
1,798 posts
 
Did the sale ad pictures show the front fin as ok, not damaged ?

I know this is a fairly common thing to happen during shipping.


Really ?

It’s not severe enough that I don’t want the amp, I’m not going to send it back over one bent fin.


Those fins are thick. That amp took a real hit. What does the box look like? Is it the original Krell box?  If the box looks ok, then it happened during the prep for shipping. I would be getting it checked out and/or contacting the seller.

Unfortunately this can’t be fixed like you fix a bent boat prop.

gdnrbob
2,421 posts
 
 
Of course, you could contact Krell and ask their opinion. If it took such a hard hit, there may be additional damage. Proceed with caution.
pbnaudio's avatar
pbnaudio
1,534 posts
 
Is almost impossible to do, any repair will always be visible  Your best bet would be to get a new heatsink and replace it.

You might want to lift the lid to see if anything else got knocked loose in shipping.

This btw is why this happens  :-)

https://www.youtube.com/watch?v=2Q6_9A90cUk

Best of luck

Peter



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