Rigol DP832 Not starting up

[deon]

My 5 year old Rigol DP832 was working correctly despite the occasional resets.
However, tonight it reset and never started up again.
The output wasn't connected to anything when it reset.
The display backlight is off and doesn't beep on startup or respond to any keys.
The cooling fan runs at low speed, so there is power to the unit.

Does anyone have any ideas?

[thm_w]

Does your unit have the original "hot" regulator issue (see the old thread if you're not sure)? Perhaps it burned itself out, and since it powers the CPU section, it won't boot up.
There are also a bunch of through hole fuses on the PSU board, I would go through and test those. Along with usual voltage testing.

[torcek]

Did you manage to solve this issue?

[Proto]

Since you fan is running slow, consider the following:

I tried replacing the fan with a quieter unit and the control circuitry noticed the current drain was below a threshold so it would not energize any of the outputs.  I was going to apply additional loading but since it was under warranty at the time, I switched back to the original fan.

I don't remember if it flagged a fan fault on the UI.

[ldemers]

Well.. mine now also refuses to boot. It lights up, fan starts, screen stays blank.  As suggested by Rigol, I started while pressing help, and was able to boot. But that worked only once.  Any suggestions ?