Arm123
Member
I have a WG P738 / U5000 in a Blitz 99 thats giving me some issues. Started out displaying just red that progressively got worse when the screen started to flicker to a solid whitish pink / purple color. The monitor is now stuck on that.
All the breakout board controls respond, so i am assuming its not anything in the vertical / hrz deflection area.
I went threw the neck board and resoldered all the lifted traces i found around Q503, Q504, Q505.
I socketed and replaced U500, no change.
Also tested all the smaller amp transistors (2n3904) and resistors in the color circuit and they all test as fine.
I do have one small question... that may have been caused by my stupidity.
I noticed on the main board, mounted to the heat sink of U601, there is a resistor thats mounted to the heat sink. It has a couple of leads, one white lead thats connected to a 2 pin plastic connector which is connected to TP205 (30V).
I may have disconnected it by accident and connected the empty socket of the connector but i cant remember. The white lead is supposed to be connected to TP205 ?
Any other suggestions ?
Thanks for reading.
All the breakout board controls respond, so i am assuming its not anything in the vertical / hrz deflection area.
I went threw the neck board and resoldered all the lifted traces i found around Q503, Q504, Q505.
I socketed and replaced U500, no change.
Also tested all the smaller amp transistors (2n3904) and resistors in the color circuit and they all test as fine.
I do have one small question... that may have been caused by my stupidity.
I noticed on the main board, mounted to the heat sink of U601, there is a resistor thats mounted to the heat sink. It has a couple of leads, one white lead thats connected to a 2 pin plastic connector which is connected to TP205 (30V).
I may have disconnected it by accident and connected the empty socket of the connector but i cant remember. The white lead is supposed to be connected to TP205 ?
Any other suggestions ?
Thanks for reading.