I bought a power supply and hooked it up...nothing...so i checked the voltage...for some reason it was 24V dc instead of 12 (at 4Amps)....i fixed that...but when i hooked it up the first time at 24V - could i have fried something..as it is still not working?.. i found no fuses inside the monitor. Thanx
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
When the TV goes dark, check the back lights is still on or not.
1. If the back lights are still on, mostly the problem is the T-CON board.
2. If the back lights are off, test the 24V DC voltage, back lights on & Dim control voltage on the invert board. a. If the 24V is not there, the problem is the main power supply,
b. If the 24V is there, also the back lights on voltage is over 3.0V DC, the Dim control voltage is over 2.8V DC, the problem is the invert board,
c. If the back light on & Dim control voltage are lost or low, the problem is the Main board.
The typical lousy power source for this system is likely defective. They will normally rise to 140-150% of nominal voltage (24V) and settle around the required voltage when loaded.
Check the supply (if separate) for a rating of voltage and current; for example: "24VDC/XXMa" where the 'XX' is the current that will either be in milliamperes or amperes.
To correctly measure the voltage, you must know first if it's output is AC or DC.
If this is a DC supply, it probably has a failed diode, if AC, the transformer is bad.
A less likely, but possible problem, is that the programmer itself has an internal failure and is overloading the supply.
If you have a meter with a separate 10A jack, and you can interrupt either side of the supply line, try measuring the load current.
This will however, only be possible if the 10A can measure both AC and DC or if you know that the supply output is DC.
tried to disconnected the 24v supply connectors going to the power inverter board which may the cause of voltage drop. after you disconnect then if still no output 24v dc coming from the power supply board the cause will be bad power supply board. check for an open resistance or bad regulators going to the 24vdc out. by the way you should connect all the connectors going to the main board to turn on the processor and the inv_on voltage going to the inverter board.
Please understand that the generator produces power from fuel with an engine wheras the invertor is one which genrerates power from a stored battery using the principle of frequency switching a DC source to induct and produce AC.
Now you can have an uninterupted power supply setting with the invertor backed up by the generator so that when the battery voltage goes down you can start and charge the invertor and also supply the extra energy .
the ratings of both must also be considered.
The PSR takes a 12 volt, 1 amp or more DC power supply with positive on the pin.
If you have connected 24 volts either AC or DC of either polarity you have likely caused internal damage. Try a 12 volt DC supply and if it doesn't work, it needs to go to a repair facility.
ALWAYS check the voltage and the polarity on ANY of the devices using the power adapters BEFORE connecting the adapter..
Your power supply on the dc output should have the floowing DC voltages, 5v, 12v, and 24v. Just start probing the connectors of the power supply. 24v is needed for the backlights inverter board, 12v for sounds, 5v for logic board.
×