1. In most, if not all states, the warranty is extended by the amount of time you don't have the product.
2. Ask for the date when you'll have your unit or a new one back.
I just purchased a TJ35 last month and after only 2 weeks of using it my backlight burned out due to a design law in the cable. I called sonu support and was told that I would have to wait until after Thanksgiving for them to send me a return box so my clie could be repaired. I insisted that they send me a new unit since this problem has leftme without a functional PDA for work but they refused to do so. The box arrived the following week and I sent my clie in for repair. Now I have been wiating and the repair status has not changed so I called Sony to inquire. I was told that the parts needed were on backorder and they could not tell me when my device would be repaired and returned. After much discussion on the matter, I was finally told that they would request that a new device be sent to me but could now guarantee when they could because of the backorder but a rep would call me in 24 to 48 hours.
Tell me, does Sony not consider that people buy these devices for business purposes and need them? I rely heavilly on my PDA yet I am told that I have to wait for a new/repaired one for who knows how long. Poor customer service!!
If you are considering buying a Sony Clie or a Sony Clie TJ35, I would strongly encourage you not to do so until this problem is fully resolved and sony learns the importance of good customer service.