White dots on the Mitsubishi WD-60638 RPTV screen means the 4719-001997 DLP Chip meeds to be replaced. Installing a new Mitsubishi/Toshiba 4719-001997 DLP Chip 1910-6143W is easy when you follow our step-by-step instructions. Note: These instructions can also be used for the following Mitsubishi models:  WD-57733, WD-57734, WD-57833, WD-60638, WD-60733,WD-60735, WD-60737,WD-60738, WD-60833, WD-60837, WD-60C8,WD-60C9, WD-65638,WD-65731, WD-65733,WD-65734, WD-65735, …

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