Ticking noise coming from my Wells Gardner K2703 monitor (continued)

2PacMan

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Ticking noise coming from my Wells Gardner K2703 monitor (continued)

I have a Wells Gardner monitor K2703 that won't power on and is making a ticking noise. To me, it sounds like it's trying to fire up the necktube, but it won't catch. I can't tell exactly where the ticking is coming from.

I performed a cap kit and found one completely blown cap and 4 that were bulging slightly. I went ahead and replaced all 38 caps in the kit.

I also reflowed all the connectors.

I'm still getting the ticking noise and monitor will not fire up. Any suggestions or ideas to try next? My heart sank when the capkit didn't fix anything, I spent close to 6 hours doing it.

This is a continuation from my previous thread here: https://forums.arcade-museum.com/showthread.php?t=402774 I thought I had had a WG k7000 but turns out it is a WG7203
 
check to see if your HOT is shorted, that will cause ticking on that chassis.

Great thank you very much. I will try that tonight. Do you know the location of the HOT? How exactly would I test it? I set the multimeter to Ohm setting, put the black lead on the chassis frame and then the red lead on each of the legs of the transistor? What readings am I looking for? I'm sorry, I've done capkits before, but I'm sort of a monitor noob after that.

EDIT: I think I found the HOT. It's the transistor screwed to the metal part of the chassis? But how do I test?
 
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Great thank you very much. I will try that tonight. Do you know the location of the HOT? How exactly would I test it? I set the multimeter to Ohm setting, put the black lead on the chassis frame and then the red lead on each of the legs of the transistor? What readings am I looking for? I'm sorry, I've done capkits before, but I'm sort of a monitor noob after that.

EDIT: I think I found the HOT. It's the transistor screwed to the metal part of the chassis? But how do I test?

I can't remember what the package of that HOT looks like, but on youtube, Buffett has a great vid for checking HOTS of all varieties. Try searching youtube for arcade buffett
 
Great thank you very much. I will try that tonight. Do you know the location of the HOT? How exactly would I test it? I set the multimeter to Ohm setting, put the black lead on the chassis frame and then the red lead on each of the legs of the transistor? What readings am I looking for? I'm sorry, I've done capkits before, but I'm sort of a monitor noob after that.

EDIT: I think I found the HOT. It's the transistor screwed to the metal part of the chassis? But how do I test?

I think you are in HV Shutdown .

You test the HOT with continuity , the mode that beeps when its shorted.
 
you can use my video to help you.



i have parts if you need them.

if you hit a brick wall, your welcome to send it in.

Peace
Buffett
 
I think you are in HV Shutdown .

You test the HOT with continuity , the mode that beeps when its shorted.

So I did the continuity test last night. I put the black lead on the chassis frame and put the red lead on each leg of the HOT. At about the 3rd or 4th leg, I get a beeping noise. Does this signify the HOT is bad?

I included a picture to double check and make sure I was testing the right thing. Do you know what type this is and where I can order one? Thank you very much for your assistance.
 

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So I did the continuity test last night. I put the black lead on the chassis frame and put the red lead on each leg of the HOT. At about the 3rd or 4th leg, I get a beeping noise. Does this signify the HOT is bad?

I included a picture to double check and make sure I was testing the right thing. Do you know what type this is and where I can order one? Thank you very much for your assistance.


that is not your HOT in the picture and the HOT goes over by the flyback. make sure to test out of circuit other wise if your chassis has a short somewhere else you could read that and think the HOT is bad. always confirm out of circuit. corrected mistake.
 
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that is not your HOT in the picture and the HOT is the 2SD1398 on the aluminum plate that goes over the flyback. make sure to test out of circuit other wise if your chassis has a short somewhere else you could read that and think the HOT is bad. always confirm out of circuit.



Oh man, I tested the wrong component! Thanks for the clarification, I will hopefully find the correct one, check it tonight, and report back, thank you.
 
the HOT is right next to the flyback and has 3 legs, is not a sd1398. outer legs will beep all other combinations you test should not beep....
 
I haven't had a chance to pull it to test, but I believe I did find the correct component. I am hoping to pull it tonight and watch the video to see how to measure and report back.

The numbers on it are CS297, if that helps at all. Thanks you.
 

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yup that is it.

measure it in circuit first and if it tests shorted then remove it and test again.

Peace
Buffett
 
Your video was awesome and very informative. Thank you i learned alot. Never knew how to measure HOTs. The part of the voltage regulators was good too.

So i pulled the HOT and tested it. 0 readings on both legs and beeping continuity on all leg combinations. So I definitely have a bad HOT. Do you know what the exact replacement component is that i need? I'll order it from your store since you've provided me with so much help.
 
Your video was awesome and very informative. Thank you i learned alot. Never knew how to measure HOTs. The part of the voltage regulators was good too.

So i pulled the HOT and tested it. 0 readings on both legs and beeping continuity on all leg combinations. So I definitely have a bad HOT. Do you know what the exact replacement component is that i need? I'll order it from your store since you've provided me with so much help.

no prob, glad it helped you diagnose your issue.

yes i have the parts you need.

shoot me a PM and we can get you all the parts you need.
i don't have all the parts i have in stock listed on my store yet.

Peace
Buffett
 
I have some new parts on the way. I will update this thread once I get them and install them.
 
Your video was awesome and very informative. Thank you i learned alot. Never knew how to measure HOTs. The part of the voltage regulators was good too.

So i pulled the HOT and tested it. 0 readings on both legs and beeping continuity on all leg combinations. So I definitely have a bad HOT. Do you know what the exact replacement component is that i need? I'll order it from your store since you've provided me with so much help.

you are welcome
 
you are welcome

You didn't think you needed to check for shorts before you ordered

the caps?

I would suspect another part also Hot don't blow because they don't have

anything better to do.

Is your power supply regulating good.

or is it B+ to high and shorting the HOT?

I would suspect the fly if the B+ is correct.
 
Thanks to everyone who replied on this thread, my monitor works now!

So for anyone else in the future who might be having this issue, what fixed it for me was a cap kit and installing a new HOT.

Picture looks pretty good now, and surprisingly, my Pole Position board set actually works. Just have to work on an issue with the pedal, but that shouldn't be too hard to get going.

Thank you again for everyone who took time out of their day to post replies in here, I learned quite a bit in this process as well.
 

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