My Things ArticlesFixing a bad LCD contrast control – a modern, drop-in replacement (Radio Shack / Tandy TRS-80 Model 100 & NEC PC-8201a & PC-8201) Doc navigation← Drop-In VR1 LCD Contrast Control for Radio Shack / Tandy TRS-80 Model 100 & NEC PC-8201a & PC-8201 DocumentationOrder Things → Was this article helpful to you? Yes No How can we help? Name Email subject message