Dimarson DM-R906

Hi!

I’ve got this DVD recorder. After switch on from stand by, it switches of in 5 seconds. The drive (DML-200) is working fine in PC. The PSU voltages are OK. So I’m looking for service manual and working firmware for it. I found for DM-R905, but that is not good for this.

Thanks for help!

Never mind the PSU voltages, check the ESR of the electrolytics in the PSU, it's a VERY common problem.

Yes, but I measured them with oscilloscope too. There is no noise on the voltages. On the +12V, there is a noise of 16mVpp, but it can’t cause the problem.