Hanatrex Polo problems

[Adamski]

Hi All
Just brought a cab with a Hanatrex Polo and it's giving me problems.Basically I get intermittent green horizontal lines and also grey lines.I can get rid of these by fiddling with the remote board and the connection wires block but they always come back.The picture also seems to "jump" around the edges between different brightnesses like it is "glowing" sorry for description but it's the only was I can explain it.Any ideas?
Sad as the cab is great

 

[tb2000]

Intermittent green/grey horizontal lines could be bad/cracked solder joints or trace(s) somewhere if you can make it go away but could also be a bad green neckboard transistor. Could also be a bad rgb chip (the multi pin one on the neckboard) just being a coincidence that it goes when you move it about. I know what you mean about the "glowing". It sounds like a B+ regulation fault. Could be bad caps in the psu somewhere. Also the glowing fault (if its the type where it also changes background brightness with image changes) is a common Polo 1 fault (and Polo 2 sometimes), i've had it quite a number of times. I've never found the cause despite going over every neckboard component but i've fixed it pretty much every time by swapping out the neckboard for one from a parts chassis.

 

[Adamski]

Wow.Thank you for the detailed response.Where to start for a noob?

 

[gunblade]

remove chassis and inspect solder joints

 

[Adamski]

What am I looking for?

 

[Adamski]

Just done this now then gone back to normal screen

 

[gunblade]

ok that most likely the green drive transistor on the neck card
but tbh if you asking these most basic of questions then i would suggest sending it off for repair

 

[Adamski]

I agree.Would you do it for me please?

 

[gunblade]

yes

 

[Adamski]

Cool.If you pm me your deets then I can post tomorrow.
Thank you