Hantarex Polo 2 (dead) please help!!

[Mr_Goshki]

Hello all, i've just aquired a hantarex polo 2 (25") and trying to get it going for a cabinet i've had sitting for a long time.
Set it up correctly and done a visual inspection of the boards and all seems ok, and very clean, no damage. However it's dead as a doornail no neck glow, no noises, nothing! not really sure where to start with it, usually monitors die when i'm using them and it gives me some idea of whats going on with the way it dies (ie the old resistor going up or vertical deflection). anyone got any clues on where to start i hear the power supplies in them are tepremental?

I also have another polo(3?) that's 25k/31k that i need to spin up and see whats going on at some point but i need the standard resolution one sorting first and back into the cab, anyone with any clues please let me know!

Thanks in advance, M_G.

[grantspain]

polo range go into OCP when faulty so you hear a ticking or chirping,if you hear nothing then the b+ must be missing.
You will need to first check the fuse and then using the schematic you can trace b+ line and use a dummy load to prove it

your other polo if it runs 31khz must be a polostar,this will not run on the same tube as polo 1 or polo 2

[Mr_Goshki]

Hi thanks for the reply! i'm trying to find the manual online, is it near enough the same as the polo 1?
I've inspected the chassis a bit more and there's 2 diodes that had a crack in the trace above the power supply section, repaired it and tested and it's the same.

I do have a tube for the 31k polo but no remote card not sure if i can try it with the one off the polo 2, the connections look about the same.

I'll get back on it again later tonight was winding me up a bit because it looks virtually new and want to get it going again!

Thanks again, M_G

[grantspain]

polo 2 and polostar remotes are the same
polo 1 schem is completely different to polo 2

are you in the U.S?

[grantspain]

POLO 2 AUTO SCHEMS

[Mr_Goshki]

Awesome, i'll let you know how i get on i'll try the remote board on the other monitor in a bit
Edit: i'm based in UK.

[grantspain]

well if you get stuck I actually repair monitors for the coin op industry here in the U.K
i am sure you are aware the polostar is a multi sync chassis that will run from 15khz to 38khz,they are a very good quality chassis imo

[Mr_Goshki]

Nice one! it's always good to know someone who can help!
Unless the polo's are something simple it will have to go off for a repair! If i get them going i will replace the standard polo1 (the only worker i've got lol) in one of my cabinets with the polo star, so i'll be needing a remote board as well.

I also have a hanty 900e there that really needs sorting.. HV section problem more than likley the lopt it was running in a garage and there must of been damp on the back and something popped with a funky white fuzz on the screen, just makes a really nasty noise now when powered up and i don't fancy messing with it. needs a full overhaul because when it did work the picture was pants. have 3 tubes for it tho! In a week or so i'll dig it out and you can check it out for me if you like!

Back to the polo's,

Had another look at the polo boards, and the polo 2 looks like d 13, and d 16 toast, do you recon the caps connect are bad and causing the diodes to go?

The polo star T22 is bad, does this mean the lopt is gone also?

Thanks Again

[grantspain]

did you read the diodes out of circuit,i.e lifted one side

that is rare for those to go,its not going to be an easy fix this as you will also need to check the switching pcb for any short FET's

T22 short on the polostar could be loads of stuff,it is caused by bad electrolytic caps,bad high voltage poly caps,shorted FET,shorted east/west correction diodes and possibly flyback transformer-although that is quite rare on polostar

[Mr_Goshki]

No worries, there was a crack on the board around the diode, i measured the diode but can't rember if i measured it first or after i did the track repair.
Sounds like they are a bit beyond me, and you know more than ever about them so may as well get you to do them, it will most likley be quicker and a better job than i'll be able to do. If your up for it that is!

If so i'll get them all together and shoot you a pm and we can get them sorted. I assume you do polo's but can you do the hantarex 900e as well (i've been after getting this fixed for ages!). I have all the tubes as well depending where your based i could drop them off if you need the whole thing, but i'm guessing you have a few kicking around!

Thanks again!

[grantspain]

i can virtually any monitor as long as i have a compatible tube,which i do have for mtc900e

i am in kent but i do not need the tubes,i just require the chassis

[Mr_Goshki]

Pm sent!