Thia is continued from the "Chris Rhoades is the man!" thread in the main discussion forum (link).
Issue:
Thanks for the info. I need to read it again and see how it matches up.
The screen did not work when X701 was removed.
I was hoping it wouldn't be the IC. A quick check turned up nothing but the data sheet and the usual "we have every chip that has ever existed" suppliers in China.
If I find some, I will be more than happy to share the wealth. Once I am sure I have my monitors working
ken
Issue:
There is no neck glow and they seem to be having trouble in the high voltage section. On the RF G07 flowchart:
Blank screen -> F901 OK -> F902 OK -> Voltage check = Too high (167V) -> Remove X701. Voltage still too high -> Horizontal deflection failure. Check for cracks = No. Check for bad solder joints = No. -> voltage on X01 = 166.5V
I have not tried to test X501 or substitute IC501 yet. I was going to make a run to Fry's to see if they had any x501 (looks like NTE198 is the replacement) transistors. It looks like IC501 is something of a specialty item (HA11244).
But there is definitely no Hi Voltage going to the anode. When I attempt to discharge it, there is no spark, even immediately after testing it.
ken
See if this repair log helps at all. I made this when I was fixing my G07 using mostly info from the threads here on KLOV. I was getting the same voltage issue you have and replaced x901/x902 to fix it. Did the screen work when you removed x701?
[URL]http://sites.google.com/site/g07repairlog/[/URL]
Thanks for the info. I need to read it again and see how it matches up.
The screen did not work when X701 was removed.
I just had one that was having the same issues... It's the IC, at least it was on mine... you have the exact same measurements I had. Shame the ICs are so expensive, I just had to rob one from another G07 to get the monitor to where it should be.
Yep... IC501...
If you find any for really cheap, lemme know... I'll go in on a few of them with you. I need to replace at least one on the monitor I just robbed and I'd like to keep them on hand so I don't have to go through that again.
I was hoping it wouldn't be the IC. A quick check turned up nothing but the data sheet and the usual "we have every chip that has ever existed" suppliers in China.
If I find some, I will be more than happy to share the wealth. Once I am sure I have my monitors working
ken
