Hantarex Polo 25" repair

CEC_DFW

Active member
Joined
Jun 18, 2008
Messages
1,997
Reaction score
13
Location
Lake Dallas, Texas
So, ive done some searching. I really want to hear some peoples $0.02 on this. What have you done/seen/repaired etc. I have 3 of these on a shelf that i want to repair soon.

for instance, i had a tube with a shrunk image, looked like a 19" image on a 25" tube. I replaced the diode at D135 (if memory serves...)

Ill contribute what I stumbled upon from ken layton (thanks ken)

HANTAREX "POLO" MONITOR REPAIR GUIDE 1
GENERAL INFORMATION
Made in several CRT sizes from 10" to 33" with the 20" and 25" being most commonly encountered versions. Comes in "universal" mounting frame. This monitor has a switching regulator power supply under the vented metal cover.
CRT INFORMATION
The 25" version uses an RCA # A63ADT10X05 picture tube. Use B & K rejuvenator socket adapter # CR-23 to test or rejuvenate this picture tube.
YOKE INFORMATION
The Yellow & Orange wires are the horizontal deflection section and the DC resistance of it is 1.7 ohms. The Red & Brown wires are the vertical deflection section and the DC resistance of it is 5.4 ohms.
FLYBACK INFORMATION
Original Hantarex part # 28820061. The H.R. Diemen replacement is # HR7215. The MCM Electronics (www.mcminone.com) replacement is # 142-210. Happ Controls replacement is # 49-3097-00.
CAPKIT INFORMATION
These capacitors go on the neckboard:
C12 100 uf @ 25 volts, C14 4.7 uf @ 250 volts, C18 47 uf @ 25 volts, C21 10 uf @ 50 volts
These capacitors go on the main board from the center to the right side:
C130 100 uf @ 25 volts, C137 220 uf @ 35 volts, C139 1000 uf @ 35 volts, C142 47 uf @ 25 volts, C144 1000 uf @ 35 volts, C146 4.7 uf @ 100 volts, C157 220 uf @ 16 volts, C159 2.2 uf @ 50 or 100 volts, C160 2.2 uf @ 50 or 100 volts, C165 1 uf @ 100 volts, C166 100 uf @ 25 volts, C168 100 uf @ 200 volts, C177 47 uf @ 250 volts, C181 4.7 uf @ 250 volts, C182 22 uf @ 50 volts, C184 10 uf @ 50 volts
These capacitors go in the power supply section (left side) of main board and you must remove the metal cage to access all these capacitors:
C111 220 uf @ 25 volts, C112 22 uf @ 50 volts, C114 22 uf @ 50 volts, C121 100 uf @ 200 volts, C123 10 uf @ 100 volts, C125 470 uf @ 35 volts, C129 220 uf @ 25 volts
This capacitor goes on the remote adjustment board:
C401 1 uf @ 100 volts
Zanen Electronics capkit # 810 is the correct kit for this monitor. Bob Roberts (www.therealbobroberts.net) also stocks a capkit for this monitor. Happ Controls # 49-5083-00.
REMOTE BOARD POTS
RV401 V Freq. (vertical hold) 4.7 k ohms (Mouser # 531-PTC10V-5K or # 323-409H-5K)
RV402 V Amp. (vertical size) 220 k ohms (Mouser # 531-PTC10V-250K or # 323-409H-500K)
RV403 V Shift (vertical position) 1k ohms (Mouser # 531-PTC15NV18-1K) 15mm pot
RV404 Horiz. Amp. (width) 10 k ohms (Mouser # 531-PTC10V-10K or # 323-409H-10K)
RV405 Contrast 10 k ohms (Mouser # 531-PTC10V-10K or 323-409H-10K)
RV406 Brightness 100 k ohms (Mouser # 531-PTC10V-100K or # 323-409H-100K)
RV407 H Phase (horizontal position) 10 k ohms (Mouser # 531-PTC10V-10K or # 323-409H-10K)
RV408 H Freq. (horizontal hold) 10 k ohms (Mouser # 531-PTC10V-10K or # 323-409H-10K)
HANTAREX "POLO" MONITOR REPAIR GUIDE 2
All pots on this board are horizontal mounting style. There is number "OC 03" silkscreened on the parts side to the right of the connector.
Copyright © 2006 by Ken Layton. All Rights Reserved.



THANKS YALL
 
Copied this from another members thread

Hantarex Repair Logs

1. Monitor Power Supply output high and not regulating. C112 and C114 (22uf 50V Electrolytic Caps) replaced. This can also cause the Monitor to trip.
2. East –West not adjusting. Check D134 and D135 for leakage. Also check the Horizontal size adjustment as this also effects the E/W
3. Tripping (Ticking Sound). Scoped output of Line Output Transistor. Very small Square wave low volts pulses. Flyback faulty. In this condition R227 was getting extremely hot
4. Shading on side of screen and streaking on picture. Check R36
5. Not starting up. Check C181 (4.7uf 250v Cap)
6. Picture Shimmering, Ripples and line pulling, Check Caps on secondary of Power Supply. C123/C129/C166
7. Lines on top of picture. Power supply set too low
8. Tripping, Check Line output transistor. Remove Transistor and connect globe to power supply. If output Ok. Transistor could be leaky or Flyback is faulty
9. Power Supply oscillates with no load but does not run with a load. Check R111,R112,R113 (1.5Ohm Resistors)
10. Power Supply dead. Check D105
11. Picture severely distorted on sides. Check R250 6.8k Resistor (Open Circuit)
12. Power Supply dead. Check ZD101 18v Zener Between transformer and Fet heatsink
13. Can use IRF 840 for Chopper FET
14. No brightness control, R240 (180K resistor O/C)
15. Keeps tripping, Scan coil plug cold solder joints
16. Monitor comes on but frame collapse. Fusible frame IC supply resistor burnt and Frame IC blown. Power supply was not regulating. Replaced C112 and C114. replaced Frame IC and Resistor. Fitted cap kit


lots of good tips on the above mentioned thread
http://forums.arcade-museum.com/showthread.php?t=171648
 
Cap 150

So, ive done some searching. I really want to hear some peoples $0.02 on this. What have you done/seen/repaired etc. I have 3 of these on a shelf that i want to repair soon.

for instance, i had a tube with a shrunk image, looked like a 19" image on a 25" tube. I replaced the diode at D135 (if memory serves...)

Ill contribute what I stumbled upon from ken layton (thanks ken)

HANTAREX "POLO" MONITOR REPAIR GUIDE 1
GENERAL INFORMATION
Made in several CRT sizes from 10" to 33" with the 20" and 25" being most commonly encountered versions. Comes in "universal" mounting frame. This monitor has a switching regulator power supply under the vented metal cover.
CRT INFORMATION
The 25" version uses an RCA # A63ADT10X05 picture tube. Use B & K rejuvenator socket adapter # CR-23 to test or rejuvenate this picture tube.
YOKE INFORMATION
The Yellow & Orange wires are the horizontal deflection section and the DC resistance of it is 1.7 ohms. The Red & Brown wires are the vertical deflection section and the DC resistance of it is 5.4 ohms.
FLYBACK INFORMATION
Original Hantarex part # 28820061. The H.R. Diemen replacement is # HR7215. The MCM Electronics (www.mcminone.com) replacement is # 142-210. Happ Controls replacement is # 49-3097-00.
CAPKIT INFORMATION
These capacitors go on the neckboard:
C12 100 uf @ 25 volts, C14 4.7 uf @ 250 volts, C18 47 uf @ 25 volts, C21 10 uf @ 50 volts
These capacitors go on the main board from the center to the right side:
C130 100 uf @ 25 volts, C137 220 uf @ 35 volts, C139 1000 uf @ 35 volts, C142 47 uf @ 25 volts, C144 1000 uf @ 35 volts, C146 4.7 uf @ 100 volts, C157 220 uf @ 16 volts, C159 2.2 uf @ 50 or 100 volts, C160 2.2 uf @ 50 or 100 volts, C165 1 uf @ 100 volts, C166 100 uf @ 25 volts, C168 100 uf @ 200 volts, C177 47 uf @ 250 volts, C181 4.7 uf @ 250 volts, C182 22 uf @ 50 volts, C184 10 uf @ 50 volts
These capacitors go in the power supply section (left side) of main board and you must remove the metal cage to access all these capacitors:
C111 220 uf @ 25 volts, C112 22 uf @ 50 volts, C114 22 uf @ 50 volts, C121 100 uf @ 200 volts, C123 10 uf @ 100 volts, C125 470 uf @ 35 volts, C129 220 uf @ 25 volts
This capacitor goes on the remote adjustment board:
C401 1 uf @ 100 volts
Zanen Electronics capkit # 810 is the correct kit for this monitor. Bob Roberts (www.therealbobroberts.net) also stocks a capkit for this monitor. Happ Controls # 49-5083-00.
REMOTE BOARD POTS
RV401 V Freq. (vertical hold) 4.7 k ohms (Mouser # 531-PTC10V-5K or # 323-409H-5K)
RV402 V Amp. (vertical size) 220 k ohms (Mouser # 531-PTC10V-250K or # 323-409H-500K)
RV403 V Shift (vertical position) 1k ohms (Mouser # 531-PTC15NV18-1K) 15mm pot
RV404 Horiz. Amp. (width) 10 k ohms (Mouser # 531-PTC10V-10K or # 323-409H-10K)
RV405 Contrast 10 k ohms (Mouser # 531-PTC10V-10K or 323-409H-10K)
RV406 Brightness 100 k ohms (Mouser # 531-PTC10V-100K or # 323-409H-100K)
RV407 H Phase (horizontal position) 10 k ohms (Mouser # 531-PTC10V-10K or # 323-409H-10K)
RV408 H Freq. (horizontal hold) 10 k ohms (Mouser # 531-PTC10V-10K or # 323-409H-10K)
HANTAREX "POLO" MONITOR REPAIR GUIDE 2
All pots on this board are horizontal mounting style. There is number "OC 03" silkscreened on the parts side to the right of the connector.
Copyright © 2006 by Ken Layton. All Rights Reserved.



THANKS YALL

Do you have the UF and the volts # for cap 150?
 
main source of issue

i have recapped a few polos. i have found that the adjustment board can be the main issue of a lot of its problems. just by moving the connecting wires you can make the screen ahve jail bars, collapse etc.
 
Back
Top Bottom