What would cause this couble picture

GoneMad

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I pulled this down while I am waiting for a part order. It's a 25" Kortek with no model number. It's supposedly a mirror version of the k7000? Anyway, it had vertical collapse, a horizontal line through screen? I recapped and swapped out the vertical IC. Now I have this. Any suggestions?
IMG315.jpg

IMG314.jpg
 
Bad New Ic? was it a NTE replacement?

Vertical size pot?
bad connections on remote board wires?
bad connections on the fly its a good chance the supply voltage
for the vertical circuit comes from the fly around 25~27vs line


take a picture of the chassis
incase looking at the chassis may help
to ring any bells with anyone..
And Id the chassis better.
Good Luck!
 
if it needs a remote board that could be part of the problem.

by all the empty header pins i would suspect it needs one.

the K7000 will do the same type of thing if the remote board is not hooked up.

Peace
Buffett
 
Yea. Without the remote board, it will not display at all. I have 2 remote boards, all adjustment pots work, but do nothing to improve the picture. The ic I replaced was the one that starts with LA. Cant remember the whole number though,or I think it may be la7830. I don't have it right in front of me. Is there a way to test the pots on the board with a DMM?
 
More Parts and connections!!

Did you notice the part over by the signal input header that looks
overheated, a zener check it out.. you can look at the number on it and tell
what the zener should be rated for voltage and wattage.
check the voltage on it first what it reads measure on the band side of zener.


Symptoms really looks like a caps issue to me..
You must just changed each cap from stock and not a kit
because you said you dont no the model Number..
did you replace the NP cap's in the picture? Anyway
Should replace the fly too whats the number on it?
Should be worth repairing if the tube is good..
 
Not sure if this is it, but I had a double picture on a Defender once that happened to be a bad encoder chip on the pcb. Thought for sure it was a monitor issue but it was the pcb. Have you tested the pcb on another monitor?
 
Not sure if this is it, but I had a double picture on a Defender once that happened to be a bad encoder chip on the pcb. Thought for sure it was a monitor issue but it was the pcb. Have you tested the pcb on another monitor?
Yes. Does the same on two different pcb's. I'll take another good look at it later on. Just on lunch right now.
 
I'm pretty sure I have this exact monitor. Let me know if there's anything I can measure that will help you out.
 
There is still something in the vertical circuit that is causing the issue. I would check voltage levels on the IC you replaced and any zenor diodes. Could be a bad transistor as well.
 
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