Need firmware and guide to flash Benq T903

[robrock1]

This monitor sometimes works sometimes not, if its off completely it takes a long time and many tries to switch it on. When its on you always get the input select window. It was off yesterday and seems it can't come on again.

The fault is from this ic: myson mtv312mv64

I need to reprogramm it. I need firmware for benq t903 and guide how to flash with isp. I am using willem eprom programmer.

[digge]

Re: Need firmware and guide to flash Benq T903

From your description of the problem i would say its more then just firmware acting up here. I would check out the power supply, measure the voltages, check for bad caps / crappy solder joints and so on. The many tries/ long time to turn on suggests its a capacitor problem but might not be.

Either way, fix the hard to turn on problem first. If you're lucky you solved the input problem as well in one go.

[Th3_uN1Qu3]

Re: Need firmware and guide to flash Benq T903

The input select window is likely due to a stuck push button...

[viziks]

Re: Need firmware and guide to flash Benq T903

The input select window is likely due to a stuck push button...

I agree ,but the switch may not be physically stuck.
Replace all 6 micro switches.One or more is leaky and causes,No operation,menu coming on,etc.This is a routine problem with certain lots of benq monitors.

[robrock1]

Re: Need firmware and guide to flash Benq T903

Its not the switches and i replaced all capacitors already. The problem actually started when there was a power fluctoation. I already replaced the ic with a different one but the firmware is wrong so the power light keeps on flashing and the monitor is not turning on.