Purchased Taikyatsu halogen projector TSH-502. One piece of accessories was about 1 weeks old. I purchased and exchanged two books including spare, but I did not hold it for a week and also two pieces went out. As a symptom, all insulators around both terminals are broken by a crushing kanji. Honestly, I do not think it is a decent product.
Although it may be problematic on the instrument side, there is a very gap in the lamp attachment part, and because the rattling is large, even a little shock, the end part on the lamp side is damaged, and it becomes a ball of the ball immediately . Would you reinforce the light bulb side, "I want you to improve the instrument side.