my iPod model no.A1238 is not starting, it is showing some signal

Hi sureshraja digitecpro,

Thanks for visiting Apple Support Communities.

Start with the troubleshooting steps in this article if your iPod is not powering on:

iPod troubleshooting basics and service FAQ

http://support.apple.com/kb/TS1382

Additionally, if you see an image similar to the ones below on your iPod screen, visit the related links for some troubleshooting steps that you can try.

iPod displays a sad iPod icon

http://support.apple.com/kb/ts1373

iPod displays a folder icon with an exclamation point

http://support.apple.com/kb/ts1405

Best Regards,

Jeremy