Jamma Repairs

misty37

Cheers Cathal....not sure of that will work though

misty37

misty37 wrote: »

So uploaded pics to Tiny pic, but as I am a new User wont allow me to uploda it here!! My twitter name is @frankogrady1 and have pics there

that is **** cool:D

CathalDublin

Looks like a nice machine, pics don't tell much though.
Are the games playing blind?
ie. can you hear them playing and insert a coin?
Does the screen stay black when no board is plugged in and turned on?

The Last Bandit

Nice cab alright and looks like the expensive parts of the monitor are working so hopefully should be an easy fix.

TechnoFreek

Misty, stick a post up on Jamma + in the tech section. Gunblade is active on there and will be quick to diagnose it for you.

As the lads have said if it's a chassis issue he will see you right.

misty37

HI guys....
when game in I can hear the music and coin op working (fench francs lol)....when out screen stays exactly the same colour! Tried to reply to Cathal who kindly uploaded the pics and wasnt allowed as Im a new user cant upload/use pics so not sure how to get this posted as you suggest Techno.

misty37

BTW can anyone advise the game that might have originally been in this cab from side art?

TechnoFreek

Misty, can you register on this site and post on this specfic forum?

http://www.jammaplus.co.uk/forum/forum_topics.asp?FID=12&title=tech-maintenance-repairs

Also the lads on that site know their woodies (tee hee) so probably can shed light on all your cab questions too.

misty37

Thanks Techno...have done that....you and your woodies

TechnoFreek

misty37 wrote: »

you and your woodies

The biggest in town.

misty37

TechnoFreek wrote: »

The biggest in town.

Erm....yeah....we are talking about Woodies DIY arent we?!?!?!

CathalDublin

definitely looks like a http://en.wikipedia.org/wiki/Zaccaria_%28company%29 cabinet but dont see one like it in the list of cabs there, could be a prototype cabinet
also look here http://www.zzzaccaria.com/

Optimus Prime

It looks similiar to Astro Wars, i was going to guess that, but cant find one with the exact same artwork. thought Astrowars though, especially with the A in the spaceship

misty37

Yup its a Zaccari cab alright but cant locate the game that its was used for anywhere

misty37

Have also tried researching the side art on google images, no joy though

CathalDublin

Its super cobra aparently

Ebay listing of a Zaccaria Super Cobra. Note the unusual side-art. Is it really a Zaccaria? Also, note that the Konami license is blacked out on the monitor glass.

see http://www.zzzaccaria.com/photos_www_2005.htm



also reference here
https://perswww.kuleuven.be/~u0008708/museum.htm

misty37

Thats it! Cheers Cathal....am on Jamma+ and talking to Gunblade...he thinks its a soldering issue see his reply below..........

hmm not nice,a very old hantarex mtc900
the gaffer tape is holding the anode cap in place as the clip needs a tweek-probably

right yeah,most likely bad solder joints on the neck card or just a tweek at the pots

and yes this chassis holds a ht charge

not a great chassis to learn on tbh

misty37

Thanks to every one who has helped me so far with trying to get this Monitor prob sorted...its appreciated, I have copied Gunblades suggestion below.....with sounding like a total muppet..can anyone put this in lay mans terms for me (yeah, yeah legs wide open for a kickin!!)

i could take a look but to be honest i think you would be better off getting a mtc900e with the correct neck card-the anode cap is bound to have deteriorated to a state whereby it may not be insulating correctly

i am quite sure the the mtc900e with a fat crt socket is fully compatible with the earlier mtc900 but it has been such a long time since i worked on the original type mtc900

you could probably pick up a replacement chassis for anything from £50-£100 depending on if it has a new flyback

TechnoFreek

Good stuff misty. Grant is a good guy and knows his sh1t. He really is the go to guy and Oracle for all things crt related.

I know you're new to all of this but we all had to start there. I would suggest nobody learns about monitors for the fun of it, only when things start to go wrong did we learn hard and fast.

misty37

yup he's given me a few things to try.......fingers crossed and thanks again!!! Up early for Katies fight so may head soon

eddhorse

Best of luck, always be safe and careful with those monitors!!

TechnoFreek

Well misty don't keep us waiting. Are you still alive or did you think it was a good idea to stick your tongue on the anode cap?

misty37

Hopefully get to it tonight...and yes before you ask if I get toasted you can have the boards and the cab

misty37

Ok so this is what Gunblade advised....


using a mirror so you can see the screen from the back of the cab tap the neck card gently(not too gently though) and see if anything changes on the screen

next locate the colour cut off pots and adjust them
page 6 and you want to adjust the colour input levels and gains



Tried tapping the neck card...no joy. Where/what the hell are the colour pots????

TechnoFreek

The neck board is the small card that connects directly on to the tube. Did you give it a good push to make sure it was seated as far as it can go.
By push I don't mean ram it but don't be shy either.

Edit. I think Grant meant by tapping the neck card it might indiciate dry joints if the image came back ok. Work your way around the card tapping every bit of it one by one and see if the image changes. Even for a moment.

What I described was to make sure the neck card was seated fully.

You have the cab turned on and a board connected?

Colour pots generally on the neck board too. Should be 6 altogether. 2 per red green blue.
I think one set is more for foreground and the other background.

eddhorse

Any pictures of the neck board and monitor board would help us locate it for you.

misty37

So have tapped the neck card and tried to see if it made a difference....no unfortunately. Cant locate the Colour post as there are no adjusters at all on the neck board, there are horizontal etc adjusters on the main board

Think the issue I have is that the machine is ancient!

Just an idea, the "bulb" is very very dim?

misty37

Hi Edd....not allowed post pics as "IM A NEWBIE" (BS)

o1s1n

By the way if you're tapping the back if the neck board to check for dry solder joints it might be an idea to use a wooden spoon or lollypop stick rather than your finger...!

The colour pots are literally little circular knobs you twist to adjust the colour/brightness etc.

Usually white and look like this;



They're fairly straightfoward. It's just like adjusting the colour/picture settings on a tv with your remote.

misty37

Lol...learnt that the hard way! They arent on the back of the neck board...have taken pics just cant upload them