| 摘要 |
PROBLEM TO BE SOLVED: To improve the tone quality (or picture quality) of a ready-made audio equipment (or video equipment) to be equal to or higher than that of a higher rank equipment. SOLUTION: After solder inside equipment is removed and soldering is performed once more by using solder of higher performance, an oil having a tone quality (or picture quality) improving effect is applied to the soldered part. |
