Siglent SPD3303C Needs fix for 1 channel not floating

I bought 2 Siglent SPD3303C power supplies and one of them has a channel 2 that is not floating( - is tied to chassis ground). I did find one reference to another person that had the same issue and Siglent fixed it since both channels of the supply are supposed to float.
I contacted Siglent and I can return it but seems like I have to pay shipping at least 1 way across the US.
My question is, has anyone else seen this and can I fix it easily myself? Thx for any help.
 
They look the same externally. Plastic bezel I think.
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