Gmp075-3 Indicator still flashing 1 after circuit board replaced
Posted by cmason236 on Jan 31, 2009
My GMPO75-3 is locking out with a flash indicator of 1. I have had the circuit board replaced, the sensor cleaned, and a new filter put in. It worked for a week perfectly fine. Since then about every 24 to 48 hours it locks out again flashing a 1. The little gold ignitor comes on but the blue flames don't start. If I reset the circuit board the heat starts right away.
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Make sure that all the indicator bulbs on the left is working. Is one of them isn't going on, the rest on the left hand side will flash faster. If you had one of your indicator bulbs replaced recently? The circuit on the indicators have a certain resistance. If one bulb goes faulty. Or replaced by an aftermarket it will behave like that.
1. Turn OFF cam 2. Remove the battery or the power supply 3. Turn the switch to CAMERA for about 30 sec 4. Turn the switch to OFF 5. Install the battery or power supply 6. Turn the switch to MEMORY 7. Open the LCD cover and press the RESET button ( small inner button ) 8. You will be prompt to adjust date/time. Do it 9. Take some pictures
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.
Other then POWER BUTTON light there are three lights more
1. lamp indicator
2. temperature indicator
3. computer input
witch one light is flashing RED or illuminated RED with POWER BUTTON orange light.
If LAMP INDICATOR light is illuminated RED than lamp runtime has reached 1800 hours. but projector still working.
If LAMP INDICATOR light flashing RED than lamp circuit failure, or abnormal function or lamp unit is damaged. In this case projector doing the same behave just like your projector.
if TEMPERATURE indicator illuminating RED the projector still projecting and if flashing RED than turned of itself
really tough to do on the net but first we need to know about any codes...
Hold speed control OFF button, and turn ignition switch to RUN position. CRUISE indicator should flash once to indicate successful entry into self-diagnostic mode. If CRUISE indicator does not flash, start procedure over. If CRUISE indicator still does not flash, repair system by symptom there might be some switch concern
If CRUISE CONTROL indicator flashes once followed by 5 additional flashes, replace speed control servo/actuator.
Release speed control OFF button. Within 5 seconds in entering self-diagnostics, press speed control ON button. Press remaining speed control buttons in the following sequence; ON, RES, COAST and SET/ACCEL.
As each button is pressed, CRUISE indicator will flash.
Wait until indicator light goes out, then press next button. After sequence has been completed, indicator light will flash to indicate test passed or failed. With the codes we can then better diagnose your concern
Immediately after static test has passed, actuator performs a dynamic test by automatically operating throttle .04-.40" (1-10 mm). Observe throttle movement to witness any sticking in cable or linkage. Ensure throttle returns properly. Turn ignition switch to LOCK position. If self-diagnostics do not pinpoint fault there is more we can do but tough over the net
The power supply has likely detected a short circuit. Hold the front panel INPUT and MENU buttons down for 5 seconds then read the code from the green light. If the light flashes a 2-2 code (2 flashes, followed by a 1/2 second pause, followed by 2 flashes) then pico fuses are blown. A 1-2 code indicates that nothing is wrong. The likely cause for blown pico fuses (FA904 & FA905) is a bad convergence driver IC. The PC board must be resoldered to replace the ICs and fuses.
For most of the problems above you will find it is bad capacitors on the power board sending unstable power accross to the controller board.
For the last posted problem (Comment by Guest, posted on Jan 02, 2008) you have a dodgy inverter circuit that needs to be repaired.
Both faults should be fairly cheap to have taken care of at your local TV repair shop. You may need to call a few in your area not just for a quote, but also to see if they are willing to work on an LCD monitor.