Modchip replacement

[Billabong2020]

I bought a pre-modded PS2 recently, and had some problems with the modchip (damn thing displays PS1 games in widescreen mode only -- no big problem, but hell, I paid for the thing and I deserve better).

Since I just bought it less than two months ago, the warranty's still valid. But before I bring it in for replacement, I just want to ask these few questions:

1) Does the warranty cover a defective modchip (I'd hate to lug the thing there, only to be told modchips aren't part of the warranty package)?

2) Since soldering a modchip to the PS2 is risky business in itself, would the replacement job risk doing any harm to my PS2 (in case the guy accidentally loosens something in there and the problem only manifests itself AFTER the warranty expires)?

Thanks in advance!