Good afternoon, how are you ? This Samsung ER290 recorder was working fine, the detail was that it had no ink, turned it off and proceeded to replace the tape reels, when it was lit, printed a numbers on the ticket and started a constant beep, took the key to the position off and stopped the beep but it keeps marking the zeros on the display, when it is set to any function, the beep starts and does not respond to any key, and I tried to do the following: = 12.0 key in REG and press CLEAR + SUBTL + CASH, if you continue to put the key X and press CASH if you persist put the key in Z and press CASH = put the key in PGM and pùlsa CASH What can I do now ? What caused this error? the beep continues Any suggestions are welcome Regards !!