[IIYAMA] vision master pro 450 A901HT
Hi,
I have a dead CRT from Iiyama but all parts are manufactured by mitsubishi. Symptoms : After power on, the screen light its led for 1/2 - 1 second then turn off this led. After a little investigation, I noticed that when I unplug a cable from the main board (near a microcontroller) to the little board connected to the CRT, the led stay on. Anyone have seen this before ? Perhaps some of you have an appropriate schematic (or service manual) for this screen or for the same type of screen from mitsubishi. I took some pictures : http://lerhu.free.fr/iiyama Thanks, |
[IIYAMA] vision master pro 450 A901HT
"Pierre Merriaux" wrote in message ... Hi, I have a dead CRT from Iiyama but all parts are manufactured by mitsubishi. Symptoms : After power on, the screen light its led for 1/2 - 1 second then turn off this led. After a little investigation, I noticed that when I unplug a cable from the main board (near a microcontroller) to the little board connected to the CRT, the led stay on. Anyone have seen this before ? Perhaps some of you have an appropriate schematic (or service manual) for this screen or for the same type of screen from mitsubishi. I took some pictures : http://lerhu.free.fr/iiyama Thanks, There's not much to go on, it could be a failed HOT, a PSU fault or heaven knows what else. One thing for certain, powering on your monitor with unplugged connectors is asking for a whole load of trouble. Dave |
[IIYAMA] vision master pro 450 A901HT
This may be of use:
http://home.clara.net/adrian-smith31...ips.htm#Iiyama Hellraiser.......... "Pierre Merriaux" wrote in message ... Hi, I have a dead CRT from Iiyama but all parts are manufactured by mitsubishi. Symptoms : After power on, the screen light its led for 1/2 - 1 second then turn off this led. After a little investigation, I noticed that when I unplug a cable from the main board (near a microcontroller) to the little board connected to the CRT, the led stay on. Anyone have seen this before ? Perhaps some of you have an appropriate schematic (or service manual) for this screen or for the same type of screen from mitsubishi. I took some pictures : http://lerhu.free.fr/iiyama Thanks, |
[IIYAMA] vision master pro 450 A901HT
"Pierre Merriaux" wrote in message
... Hi, I have a dead CRT from Iiyama but all parts are manufactured by mitsubishi. Symptoms : After power on, the screen light its led for 1/2 - 1 second then turn off this led. After a little investigation, I noticed that when I unplug a cable from the main board (near a microcontroller) to the little board connected to the CRT, the led stay on. Anyone have seen this before ? Perhaps some of you have an appropriate schematic (or service manual) for this screen or for the same type of screen from mitsubishi. I took some pictures : http://lerhu.free.fr/iiyama Incidentally, on a slightly different note, if any of you have a Vision Master Pro 510 (A201HT) that powers on but gives no picture, replace the 2SC5570 (Q503 I think it is) and the fusible resistor R561. Worked fine for me, I'm now enjoying 20" of flat screened loveliness :) Hellraiser............ |
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