And if I'm doing something daft, please tell me. I've checked the SMD components and they seem ok. Battery is still good at 8.9v (these testers work fine down to 6.5v) The non-working backlight should be a dead giveaway that something isn't right. I've flashed firmware through JTAG before though. Would adding this help? 2.2.5 Using of a rotary pulse encoder - p11 I'm guessing corrupt firmware, but I've got no experience with SPI or ISP serial flashing. I read through the original plans and it seems there is an option to add a rotary pulse encoder for menu access. Its almost as if the "contrast" part wants to go into a menu of some sort. Anyone have any ideas on how to flash through SPI? I'm arranging a replacement through the seller on ebay, but in the meantime I thought I'd tinker with it. Does anyone know of a fix for the following issue: LCR-T4 MTester v2.07 LCR Meter - Black Block Issue Turns on with quickly saying MTester v2.07, quickly displays "contrast" and then one solid black block and no backlight.
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