HP 1702 Monitor comes on but immediately goes off.

I have the same monitor, its a power supply problem from the computer most likely. check the cable connections etc... I would get a service call from an authorized dealer near you ... about $120.00. Hope this helps:)

1. your monitor has a power supply problem and will have to be serviced by a monitor tech.
the input regulator for the DC (Direct current is faulty and needs replacement as well as one or several capacitors related to the input circuit.

Look for bad caps (leaking/bulging tops) as shown in my pictures first.
http://s807.photobucket.com/albums/yy352/budm/HP%201702/

Please see my profile:
http://www.fixya.com/support/r4460477-hp_vs_15_17_19_f_1705_1905_lock

http://s807.photobucket.com/home/budm/allalbums

Maybe the Power Supply is nackard... That's why it was cheap/thrown out.
Sorry.

Pls ask your dealer about the warranty..It depends as per the market.. If the light is comming then replace the AD card other wise The problem with the inverter card.. replace ...

This kind of problem needs an isolation. Please try the steps below:

1. Check the physical connection and make sure that the power cable is properly seated to the monitor.
2. Connect the monitor into different power outlet.
3. Try using different power cable.

Otherwise, you need to bring your monitor to the repair shop if none of the steps help.

Have a great day!

Hi Don,
it sounds like your monitor's Capacitors have gone bad. This is very common. It is repairable, but the caps have to be removed and new ones resoldered on.

If you have soldering skills, not too tough of a job. If not, a shop will usually charge around $100 or so. You will have to weigh the cost vs a new monitor on this one.

Here is some more info for you on the Capacitor plague, that is quite common on monitors now.

http://en.wikipedia.org/wiki/Capacitor_plague

I have repaired an HP 1702 monitor that had similar symptoms by replacing the capacitors on the power supply board but you have to have some electronic knowledge and do some soldering if you can buy the replacement capacitors($10+/-) from a supply store. They (at least 1) will be swollen up on the ends and may have a tar-like substance leaking from them. It is best to replace them all (may be 4 depending on the model).

http://mcmelectronics.com/browse/Capacitors/3829501