Hantarex polo 25 monitor arcing and smoking, *fixeable?*

[Rec Room supply]

hello, i bought a konami 4 player rushing heroes football game and one of the monitors doesnt work.  it had a blown fuse when i got it. i put in a new fuse and i get a ticking noise and smoke starts pourin out of nearest i can tell is the "thing" that controls focus and brightness.  it looks like a transformer winding mounted in the back right rear of the monitor frame. due to the arcing and smoke i dont want to try and adjust or anything in case i make things worse. the monitor is a hantarex and it says the model is polo 25.  i have a schematic of a hantarex model mtc9110 which i assume is the same thing as they r both 25 inch screens and my cd doesnt include the polo 25 model?  at any rate is there anything as far as manuals that tell u what the problem is and how to fix it?  (troubleshooting?) having schematics doesnt really help me.  something that says if yer monitor is ticking check this thingy and replace it like this? there is a jamma cable laying loose in the cabinet that im not even sure belongs with the machine.  this have anything to do with the problem? im assumin no, since the other side works fine. i figure it doesnt belong to this cabinet?  any help is appreciated, im just learning my new hobbie! and have no idea what im doing:).........scot

[grantspain]

yeah sounds like the flyback has an internal short,double check the monitor model number(or post a picture)-the flyback transformer will have a label with a part number if you need to be sure.the flybacks are easy to get hold of for these
a replacement flyback transformer will be required,this is not an uncommon problem-it maybe worthwhile getting a new horizontal output transistor as well to be sure-if its a polo 1 then you will need a bu508a

[Rec Room supply]

hi, thanx for yer help with this.  i looked at the monitor again for any other model info.  just the polo 25".  the 25" is obviouysly the screen size, so maybe a polo 1 like u mentioned then?  the screen has a sticker as well.  its an RCA tube type A63ADT10X05.   so is this 100% the flyback transformer part i need?  if so where do i get one?  used or new?  how do i find which thing that is on the board?  i think i need new manuals, all they do is give schematics and no labelling or troubleshooting. almost useless!:) know any good complete maintenance books on these? so whats the horizontal output transister and why do u think i should get one of those as well? on the part i saw arcing and smoking the what i would call plastic tubes seem to be welded to the part and to the tube?  does not look like it pulls off?  tried tugging and didnt budge.  there some kind of sealed gas or something in those lines? if THATS the part how do i fix it if its attached to the tube? these parts u mention, do i need to discharge the tube to do these repairs? oh and do u know of any value guides for arcade games?  now that im selling these it would be handy to know whats worth what etc. old games as well as newer ones.  well this is windy enuf for now. let me know what u think i should do. have a guy offerted up a arcade with a solid red screen.  that sounds like its probly out of adjustment and probly a free fix for me?  thanx again!.........Scot

[grantspain]

i think you should post a photo of where this spark is coming from first before i offer any more info

[Rec Room supply]

hi, heres the pics.  the first one im pointing to the part in question with a screwdriver.  2nd pic shows the "tubing" i referred to in my prior email goin up and attaching directly to the picture tube. smoke comes out the left rear of this part it looks like.  let me know what the heck that doodad is and if thats my culprit.  thanx!......Scot

[Rec Room supply]

thought i should add that i dont recall actually SEEING sparks,  just the obnoxious ticking that i ASSUMED was arcing and the smoke billowing out of the back of the part. hope that helps!:)......scot

[grantspain]

help me out here mate,do you have smoke and sparks or do you have a ticking noise??

[Rec Room supply]

theres DEFINATELY smoke, thats why i shut it down right away so i didnt burn anything up.  black smoke billowing out the back of it. as far as sparks i cant recall if it was actual sparks or just sounded like it. but i usually equate smoke to fire?  if u want me to i can go out and turn it on again to see if i can see sparks?.......scot

[grantspain]

just look where the smoke is coming from

[Rec Room supply]

like in my first post its the black part behind the aluminum frame upright that im pointing to in the first pic that has the adjustments for focus and brightness. its the part that those "tubes" i mentioned come out of and one goes into the back of the monitor as in pic 2. smoke comes out of the rear left corner of the black part near as i can tell. is there any chance of relaly messing things up by running it like that?  i COULD try and look more specifically but it starts smokin in the first 2 seconds of turnin it on so i figured i shouldnt dare to look further?.......scot

[grantspain]

yep you need a new flyback transformer mate

[Rec Room supply]

hi, is that yer FINAL answer?  if so if u wouldnt mind helping me out with the rest of this previous email im pasting below this?

hi, thanx for yer help with this.  i looked at the monitor again for any other model info.  just the polo 25".  the 25" is obviouysly the screen size, so maybe a polo 1 like u mentioned then?  the screen has a sticker as well.  its an RCA tube type A63ADT10X05.   so is this 100% the flyback transformer part i need?  if so where do i get one?  used or new?  how do i find which thing that is on the board?  i think i need new manuals, all they do is give schematics and no labelling or troubleshooting. almost useless!:) know any good complete maintenance books on these? so whats the horizontal output transister and why do u think i should get one of those as well? on the part i saw arcing and smoking the what i would call plastic tubes seem to be welded to the part and to the tube?  does not look like it pulls off?  tried tugging and didnt budge.  there some kind of sealed gas or something in those lines? if THATS the part how do i fix it if its attached to the tube? these parts u mention, do i need to discharge the tube to do these repairs? oh and do u know of any value guides for arcade games?  now that im selling these it would be handy to know whats worth what etc. old games as well as newer ones.  well this is windy enuf for now. let me know what u think i should do. have a guy offerted up a arcade with a solid red screen.  that sounds like its probly out of adjustment and probly a free fix for me?  thanx again!.........Scot
   

[grantspain]

i am a bit worried about your electronics knowledge,the part is the high voltage transformer and although an easy job to replace you will need good soldering skills,also you will need to disconnect it from the tube so you have to know what you are doing



i will post a pic of the part i think that is faulty tonight so i can be sure we are talking about the same thing

[Rec Room supply]

yer worried about my electronics knowledge?  he, he. im trying to learn, but i can solder with the best of them and if u tell me how i can do it! id prefer to fix some of these games rather than gut them and put in monitors and pc's. hell goin out to the mailbox is dangerous!:)  if there is an online tutorial on removing and repairing this i can do it. maybe u know of a good book? the value of these games im sure does not support paying someone to fix it? i wouldnt know where to find someone to fix it anyhoo! can i put in an entirely different new or used monitor for a descent price thats less dangerous etc? from what ive seen its not practicle, but maybe u know of a cheap source for this stuff? sorry to be a pest, tryin to figure out what im gonna do with this new hobbie of mine and i gotta learn somewhere!.........curious george

[grantspain]

so the smoke is definitely coming from the box on the right of this pic


if sure then you can get a new flyback transformer here
http://therealbobroberts.net/parts.html#flyback

you need a polo 1 25" flyback transformer,if it comes with a capacitor kit then great as you can do a complete overhaul of the chassis and learn even more


the flyback transformer is held in place with a fixing screw just above the focus pot to the metal heat shield
it will be soldered underneath but you must make sure you also desolder the earth pin which is offset from the main array of pins
the large red wire goes to the tube anode and can carry 25000 volts when powered,these chassis do not generally need to be discharged to disconnect the anode lead,the wire terminates at a rubber cap and has a y type clip that holds it in the anode
then you have one wire that either solders/or pushes in to the crt socket-depending on crt socket type
and another wire that is soldered to the neck card

google discharging a crt to check you are clear

never attempt any work with the monitor powered or you will probably die

good luck

[Rec Room supply]

hello, yes without stickin my head in there and shocking my brain id sai it comes right out the rear left corner of that part. it may come out of something directly behind it on the board? but in the cabinet its tight to look there. i dont know about a complete overhaul i AM just a novice u know!:) this one i just want it fixed ASAP and out of here quickly as its about the size of 3 regular uprights combined and i cant park in my garage!:) do these parts kits come with instructions to install and stuff? it sounds like i really need to find a really nice complete repair and troubl;eshooting book with lottsa pics?  anything come to mind?  i really wanna learn to fix these and keep them in peoples homes but i dont wanna kill myself either!:) they seem to be fairly simple,  not ALOT of things that look like they fail on a regular basis? now that i know that red wire attached to the back of the monitor is just a rubber boot i know i can pull harder and it WILL come off with no problems.  oh and thanx for the good luck and dont die sentiment..... i hope to be pestering u many more times in the future!! ha!.........Scot

[grantspain]

these a quite complex pieces of electronics,i have been working on coin op stuff for 22 years and i only remember 3 other techs that i worked with that would tackle a monitor,i have worked with a lot of techs
there are some painful if not fatal voltages on those boards and the tubes are delicate

the red wire that goes to the cap----you have to unclip it mate NOT pull it,there is a y clip holing it in place-you have to pull up the cap as so to expose the the anode and then gently push one side of the clip using an insulated flat bladed screwdriver

if you try to remove the anode cap without discharging and there is still some charge in the tube then you will get a bit of a nasty belt

if you damage the special paint around the anode then it can arc when powered across to earth or you,equal if you damage the cap

are you u.k or u.s based

if u.k get a fella called craig from giz10p to fix this chassis for you,if you are in the states then i would actually think about getting a 8liners replacement chassis to change with this


don't underestimate the damage you can cause to the monitor and yourself if you have no experience-i do not want to be responsible for your untimely death

[Rec Room supply]

well thanx for scarin the crap out of me!:) r u sayin im better off buyin a whole new monitor chassis than fixin it?  if i simply unbolt it and toss it in the garbage without putzin with it im safe? i am in the central united states.  what kind of price would someone charge to repair my monitor? maybe i could put a posting on here for a repair guy in my area and get a bite that way and leave it to the professionals if its still profitable. hmmmmm. im starting to wonder if its worth repairing these dang things.  maybe better off converting them rather than saving them if its that dangerous. hell takin the whole chassis out and throwin it away sounds scary too!?  he, he.  let me know i will take yer advice, uve been doin it for 22 yrs and still alive so u must know what yer talkin about!:)........scot

[grantspain]

a local tv repair man should be able to fix this for you,you would need to get the correct part

[grantspain]

i don't want to scare anyone but if you really want to learn about monitors then google about discharging a tube.
the hantarex polo is a very easy monitor to repair IF YOU KNOW WHAT YOU ARE DOING

when i was a trainee i  caused myself a serious injury,i did not discharge a tube correctly and when i removed the anode cap i got a really intense shock-the problem is that  i pulled my hand away and smashed it through the neck of the tube and cut my wrist real bad.i lost a lot of blood as it cut a major vessel and had to have surgery--i have a scare 3 inches long across my wrist

you just need to be careful and get the facts and tools