MobileRead Forums - View Single Post

Jarmex · 01-12-2017, 11:30 AM

Thanks for your reply knc1, appreciate your time in responding.

Unfortunately the suggested adapter costs quite a lot to ship to the UK as its only available in the US, so I was looking at lower cost options. As a one-off, it doesn't really make economic sense to spend $22.50 fixing a basic Kindle which doesn't cost much more than that second-hand!

I'm happy enough with the process of attaching the connections to the Kindle, as you mentioned there are quite a few posts (e.g. those linked in that article) and I have read around a lot, I'm really asking for advice on whether my plan to modify the existing serial adapter sounds like it would work!

If I understand it correctly, although it's a multi-layer board, the amount of rewiring is pretty minimal. I was thinking perhaps the easiest way to do it would be to cut the visible wire on the VO_33 output from the chip, then solder the 1.8v connection on to the visible wire of the VDD_325. The rest of the soldering can be done on the chunkier outputs of the DB-9 connection, although I'm still confused why there is no continuity between the RXD/TXD on the chip and RXD_RC and TXD_TC on the DB-9.

The only issue I can think of with the above solution is if the VO_33 output is used elsewhere on the chip, but I would imagine that's pretty unlikely?

Thanks again!

01-12-2017, 11:30 AM	#3
Jarmex Junior Member Posts: 9 Karma: 10 Join Date: Jan 2017 Device: Kindle Basic 2014 (KT2)	Thanks for your reply knc1, appreciate your time in responding. Unfortunately the suggested adapter costs quite a lot to ship to the UK as its only available in the US, so I was looking at lower cost options. As a one-off, it doesn't really make economic sense to spend $22.50 fixing a basic Kindle which doesn't cost much more than that second-hand! I'm happy enough with the process of attaching the connections to the Kindle, as you mentioned there are quite a few posts (e.g. those linked in that article) and I have read around a lot, I'm really asking for advice on whether my plan to modify the existing serial adapter sounds like it would work! If I understand it correctly, although it's a multi-layer board, the amount of rewiring is pretty minimal. I was thinking perhaps the easiest way to do it would be to cut the visible wire on the VO_33 output from the chip, then solder the 1.8v connection on to the visible wire of the VDD_325. The rest of the soldering can be done on the chunkier outputs of the DB-9 connection, although I'm still confused why there is no continuity between the RXD/TXD on the chip and RXD_RC and TXD_TC on the DB-9. The only issue I can think of with the above solution is if the VO_33 output is used elsewhere on the chip, but I would imagine that's pretty unlikely? Thanks again!