Standby power switch

The clue I think is the fact the problem gets worse after being switched off. One cause could be leaking capacitors, the big ones in the the power supply. They hold a charge, but if they leak the charge is lost and they do that when the power is off. The only other I can think of is a voltage regulator. But I think that would blow a fuse. So I would get your guy to replace the caps.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

If your TV wont turn on using the power button key on the remote control and on the front panel, this is an indication of fault either on the power supply board or the main board. This kind of symptoms is not a DIY and needs to attend by a qualified Technician to troubleshoot the said boards and isolate the faulty parts.

You have mentioned that you've only used it for 4 months, then your unit is still under warranty period. Don't attempt to open the back cover because it will void the warranty, avail it because the manufacturer will fix it for free or replaced it with a new one.

The blinking green light means the unit is either Powering On (Warming Up) or Powering Off (Cooling Down).

Powering On the Projector
1. Remove the lens cap.
2. Securely connect the power cord and signal cable. When connected, the ON/STANDBY LED will turn Amber.
3. Turn on the lamp by pressing " " button either on the top of the projector or on the remote. The ON/STANDBY LED will now turn Green. The startup screen will display in approximately 10 seconds. The first time you use the projector, you can select your preferred language from quick menu after the startup screen displays.
4. Turn on and connect the source that you want to display on the screen (computer, notebook, video player, etc). The projector will detect the source automatically. If not, push menu button and go to "SETUP". Make sure that the "Source Lock" has been set to "Off". If you connect multiple sources at the same time, press the "SOURCE" button on the control panel or direct source keys on the remote control to switch between inputs.

If you are still unable to get the unit to turn on, try unplugging it for 10 minutes and plugging it back in. If it still ceases to work, contact Optoma here: http://www.optomausa.com/rma_policy.asp
Their Technical Support line is 1-888-887-5001

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Brand new? Take it for warranty repair IMMEDIATELY... don't mess with it !!!

The only thing for you to check is that you did not turn on "STANDBY" as this shuts down the power amp and the capacitors will bleed off and sound will fade. Try switch in both states before complaining

ONLY use the amp in STANDBY for a brief period (20 seconds) to let the tubes warm up... Leaving in STANDBY for a long period straains the input filter capacitor. If you are done with using the amp, turn it off...

sounds to me like the power supply has blown in it :( try 1 thing before giving up though, unplug machine from the back, open up the top door and make sure that all of your connections are fully in, if need be unplug thema nd re plug them in, shut the top door and plug back in kettle lead and hope for the best, otherwise you will probably need to buy a power supply, hope this helps, Tom

Have you checked within the set, the fuse and if the standby circuit is working. thre could be a failure of this sub votage which is required for the switch on of the main power. If you do not have any standby indication you must check this section, however if you arre getting the standby you would have a failed output or a shorting that is triggering the error amp to swtich off. If you are familiar with the circuits you can check but I would suggest that since you will need more experience to look into the main board for tracing the fault. In such case check for the service centre nearest to the place you are in using a google search for Pioneer - Audio systems- sevice. Helpful I hope. Good day.

Neither the amp or the sub have grounded power cords.

I have discovered the ML Dynamo takes about 30 minutes to switch to standby in auto mode.

With speaker level inputs connected to the Onkyo A807 amp, both units powered from the same wall outlet, Dynamo sub on Auto, the sub hums for about half an hour after the Onkyo is switched off, then the sub goes quiet. Not so good.

I connected a bonding wire between the two units on 3_7_09. If I smoked some old audio gear I could just look at that as an opportunity, right?

Works fine. Now I have the ML powered from the wall and working normally.

I suspect the power supply for the monitor. Try a power supply from a working monitor. If you have a used computer store nearby, take your power supply to them and try it on another monitor.

There is no need to turn off a monitor using its power switch. Monitors automatically go into standby mode when they are not receiving a signal. In standby mode they use less than one cent of electricity per day. If saving electricity is your goal, raise the temperature in your home by a degree and run the air conditioning less.