TA II chip (TA7680, TA7698, improved, CPU ST6367,ST6367 with a child lock function, the machine remove child lock method is as follows: press the remote control KEY key, left corner "key" characters, simultaneously press channel selection on the native ﹢, identified key will cancel child lock status.

After you as described above, if the hotel was not relieved, this is usually a ST6367BB1 internal memory the result of lightning strike damage, you should replace the CPU.