It appears that the completed product was disassembled to replace the chassis. The lighting gimmick has been restored, but the operation is unstable.
When it doesn't work, tapping it fixes the issue. The cause is likely poor connector contact, but further repairs may be difficult.
As for the tail lamp, it uses a No. 92 board, which causes lighting issues.
Although a substitute board for No. 123 is originally included, it has not been replaced because No. International Buyers - Please Note. We do not mark merchandise values below value or mark items as "gifts" - US and International government regulations prohibit such behavior. Thank you for your understanding.
We are base in Japan. Thank you for looking at our items. We sell a lot of nice and rare products from Japan. Please have a look at our other items if you like.