Sanwa/Kaga Europe no longer trading

[grantspain]

Not that affects the North American members here so much but Sanwa have gone belly up and ceased trading last week.
European members would have Sanwa monitors in many sega and konami machines.

Sanwa is the last european manufacturer of crt for arcade games after pentranic went into recievership last month and hantarex have ceased all production of crt related products.

Things are now looking a bit grim for anyone needing crt and chassis in europe.Options now are import from china or U.S

[Ken Layton]

Someone should go to their office and go through the trash dumpster to get as many manuals as they can. If they have gone out of business, manuals and service literature will be impossible to find.

[covey]

Tell me about it! I have a Sanwa chassis in an Outrun  I just picked up. Works when it wants to. When it does work, it'll go out within 3 to 5 min. An pop can be heard, and sometimes a flash. Pulled the chassis, but can't see anything obvious. If anybody has any info on these, i'm all ears. Thanks 

[grantspain]

what outrun,outrun 2?
if so its 29es31s chassis,by the sounds of things you have problem with the HT-maybe you need to clean around the anode cap

the wei ya c2931a and rodotron 666a chassis fit right onto this sanwa if you want to replace it

[covey]

Its the original Outrun. What are you refering to by the HT? I'll have to check when I get home, but that chassis # doesn't ring a bell. If I can simply replace the chassis with another, i'll go that route if I can't figure this out. Thanks

[grantspain]

original outrun will be some really old chassis,before my time jobby
easy to swap out older chassis though,all you need is a multimeter to make some readings so you can match a new chassis
if your tube has no burn then its worth doing

[covey]

What do i need to measure? The tube looks good, no burn. The game looks great when the chassis works (when it works). Once I get the measurements, how do I know what other chassis will suit besides the neck pins? Thanks again!

[grantspain]

you need to take the resistance reading of the vertical and horizontal yoke wires,pin arrray of the neck and size of the tube
this is a cga chassis so i know the it will have a low res yoke(0.900mh-1.4mh)

as you have a sanwa at present i know that it will have an isolation transformer as they are 100-120vac isolated input only chassis

go here first and see if you can id you present chassis
http://www.jomac.net.au/mon.htm

don't give up on your present chassis just yet,try removing the back door and look what happens when it cuts out-maybe you will see a flash
the problem could even be something as simple as a few leaky capacitors

[covey]

 
Sanwa PM1730B / PM1736
 
19-27" CGA
 
The chassis is on the site. It's a 19"or 20" monitor i believe. There is a flash when it cuts out. The flash is in the front where I can't see its' origin. Would you recommend recapping it to start? I didn't think it would be that simple. If a cap is leaking and arching, wouldn't it have some type of burn mark? The chassis also has 2 red wires coming off the chassis near where the 120v connects. These 2 wires are connected to nothing, no connector, nothing. Any idea?

[grantspain]

you need to some tech investigating mate,get the chassis out and check for bad solder joints

the origin of that flash could be to do with these red wires you are talking about,now these wires are either the deguass coil or a manual degauss switch-either of which if just cut and hanging loose could arc to the monitor frame therefore cutting out the power

get a photo if its not clear to you where they should go

the more info you give me points towards an arcing issue rather than component failure

[Level42]

Not that affects the North American members here so much but Sanwa have gone belly up and ceased trading last week.
European members would have Sanwa monitors in many sega and konami machines.

Sanwa is the last european manufacturer of crt for arcade games after pentranic went into recievership last month and hantarex have ceased all production of crt related products.

Things are now looking a bit grim for anyone needing crt and chassis in europe.Options now are import from china or U.S

Luckely we have an enormous stock of CRT TV's with SCART connecters here.

[covey]

Reflowed iffy solder joints when it was out. Taped 2 red wires to eliminate them. I think your right about the manual deguass. Wires are part of the deguass circuit where it plugs onto the chassis. fired it up. Crackling from neck tube. Small arcing inside neck tube where it glows. Small piece of copper laying across couple pins. Looks like one of the contacts for the pins came out! Now what? Pull the neck? Suggestions? Woule the neck arc cause somthing on the chassis to spark? I might be wrong but I thought the flash was coming from the chassis. Hard to tell.

[grantspain]

take the neck card off and take a look at the crt socket for damage,you know how to do that-with the power off evenly pull on the left and right side of the neck card gently

if you have internal arcing inside the neck that will certainly cause the problem

[covey]

Yes, already took off the neck board. The crt socket looks fine.(if you have internal arcing inside the neck that will certainly cause the problem) Yes it's inside the neck! Can the neck be taken apart to gain access to the internals where all the neck pins are?

[grantspain]

you have a shorting filament-maybe some crap in it,seen this only a few times
only way to sort this is use of tube rejuvenator or a new tube

you cannot take the tube apart,its a sealed vacuum

now although i would try the following myself i will not be held responsible if you knacker it completely,o.k

take the entire monitor out of the cab,put it face down on protective surface(towel or bubble wrap) and then(real gentle) tap the neck of the tube all the way around with the handle side of a screwdriver(not a hammer)-do it too hard and you will crack the neck and your tube is then screwed for good.I did this with an operation thunderbolt about 20 years ago and it did the trick(dunno if it still work though)

like i said if you break the neck then don't blame me,but tbh if you do not possess a tube rejuvenator then what have you got to lose because you would need to get a complete new tube/monitor anyway

[covey]

Thanks for the help.