MB ASRock Q1900TM-ITX does not r/w DVD burner

Hans wrote: Hello wardog, I have to apologize that I overlooked your Post. My brother in law lent me his power monitor and I did a measurement with it. When the PC is idling it draws 20 Watts. When it tries to read the DVD I can see power draw of 25 Watts. All to be seen in an LCD display. But  -  the power monitor has a funktion to show me short power peaks not displayed on the LCD. In that mode it shows power peaks of over 70 Watts and I think this happens when the DVD is read. Unfortunately the peak display mode does not show any timing, so I don't know when this happens. Of course over 70 Watts is too much for the power brick, whatever it does then, don't know. My next step is to buy a new power brick with at least 90 Watt to see what happens then.

As we now see, the manual calls for a 150W minimum PSU. 65W is less than half of that. 90W would not be adequate either. Even the DeskMini 110 PC requires a 120W PSU, and it uses a much smaller, simpler board.

A 65W, 19V PSU is meant to charge laptop batteries.

Part of the problem is the board itself is regulating the 19V input voltage to the three usual ATX board power needs, 12V, 5V, and 3.3V, rather than PSU itself.

If the PSU's power/Watt capability is not providing the voltage regulators on the board enough power, we can get results like this. To the board's credit, it did not completely shut down while using a 65W PSU.

If the appropriate capacity PSU does not work for you, let us know.

Hello again.

I had ordered a 150 Watt HP power brick as recommended.
Unfortunately the PC I have built with the ASRock Q1900TM-ITX board behaves
exactly the same way it did with the Dell 65 Watt power brick.
All my hopes that the brick is my problem are gone 

Any idea what else I can do ?

I  greatly appreciate any help.

Hans wrote: Ok I had to recognize that the power brick is not my problem. I opened my other PC, a big tower, removed the DVD burner which is a 5.25 inch  drive from LG and connected it to the videorecorder-PC. I could read and write all CD and DVD types with it . To summarize my experiences: - the DVD burner from the videorecorder-PC fails in the videorecorder-PC   but not in my big tower so it is ok. - the DVD burner from the big tower works in the videorecorder-PC so it's board is ok. My conclusion: - the DVD burner of the videorecorder-PC  is not compatible with it's board. - I should send the burner back to the dealer and try a different type of burner. Does anybody have better ideas ?

I'm sorry your DVD burner does not work with the Q1900TM-ITX board.

Some of the ASRock boards that have SATA power provided by the mother board only support 2.5" HDDs and SSDs that only use 5V power.  The SATA power connector on those boards does not provide 12V power to SATA drives. Normally, SATA power connectors provide 12V, 5V, and 3.3V power to a SATA drive.

I cannot verify that is the situation with this board by checking the specifications and manual. Please check with ASRock support directly about which SATA drives are supported by your board:

http://event.asrock.com/tsd.asp

Hello everybody.

I sent the Streacom burner back to the dealer and ordered an LG burner.
The test I did today with it shows no problem. The LG burner could read and write
all CD and DVD formats supported by the burner.

Of course I still don't know what the problem was and why the Streacom burner
could not  work together with the Q1900TM-ITX board.

My problem is solved and to see my odyssey in a positive way it can be a hint or
warning for others, not to use this Streacom burner together with  the
ASRock board Q1900TM-ITX.

To all the people trying to help me many thanks again.

By the way -  I forgot to mention that I had no problems even with the
65 Watt power brick.
This shows that the 65 Watt power brick has no problems with short power
peaks of 70-80 Watt, though having built in protection mechanisms as I know !

Best gegards,   Hans