hai, does any body knows how to repair hl tanks. all my tank features works except the left and right turn of the turet, i did open m tank up and i don't see any of ny curcui burn nor any cables cut off , i don't see any poblem but my turet does not move...? foward,turn,reverse, cannon elevaing, bb shoting every thing, sound and smoke, only the turret novement, anybody help me please this is my second tank that spoil,

open the tank up by removing the screws from the bottom hull, and once its done, check the wirings from the 8 pin plug to the turret motors...its very flimsy and you need a good soldering skill to join the wires back if it was the case.

Answer a few questions first and I will try to help you out. What model-- tiger,panther,ect---Was this new out of the box or a used one.----did it work at one time and just quite,or never did work.This information is needed in order to give you some good sound help in finding your problem--I'll be glad to help you all I can------BIGMIG

Well i see you posted this in two places,and think you have a tiger tank.When you said below the tank moved without any control input ( did you have it next to some type of power source that can cause interference with the transmitter,do you always make sure your transmitter is turned on before you turn on the tank.And always turn off the tank before you turn off the transmitter)If the board is faulty,I can not help you there except to tell you to replace the board.I would take the three screws out of the turret motor first,remove the motor from the mounting posts.Turn the turret back and forth and make sure it is moving freely and not binding or hanging up on something.If the turret seems to move OK,the next thing I would test is the motor itself.To test it ,you should unplug the 8 pin connector first.If you have a spare male plug that plugs into a battery it is easy to test the motor by touching the plus wire to one side of the motor terminal and the negative wire to the other motor terminal.If the motor runs OK you will have ruled out a motor problem.If all the above is checking out OK,then I would start checking the wires and any connections from the motor to the board.If this motor binds up when trying to move the turret,you are going to see smoke comming from the board.When ever you see smoke comming off the board it's not good news.Some times if you see it quick enough you can get lucky and it may still work(depending on what part of the board got hot)---------Hope this may have been some help to you,and Good luck--------BIGMIG [:-][:-][:-]

well anywhere i place the tank there is no any movement for the turret. everything just works only the turet movement, i test the motor alone and it'working, i check the 8 pin conector and connection betwen the board it's fine.....check the wire no broken wire from the connector from board to the turret, one of the ressistor does have burn marks but it's still working when i tested it with the electro tester( you know the tester which have meter and red and black cable i do not know the english word) well if the transmiter from the controler than it would not make the turning sound from the speaker. but tonight i'm going to replace the resistor and try it out again maybe tommorow i will post the pic of my board......anyody from this information knows anything, it would be great if somebody has this expirience ........thanks for the concerne.

If the board makes the appropriate sounds when the turret is turned, the transmitter is probably fine. Chances are the high-current drivers are blown. Look for the MP4024 darlington array next to where the turret wires terminate on the board. Chances are it's either a pair in that chip, or the Q1/Q2 transistors next to the MP4024. The MP4024 and transistors form a H bridge to turn the turret.

You could probably replace a blown MP4024 pair with either an external darlington transistor pair, or replace the whole chip if you can find them cheap enough. The external Q1/Q2 transistors would be a pretty easy replacement once you get one out to read the ID label. Chances are it's either a standard NPN or PNP transistor capable of a few hundred ma, though it might be a small FET.

Might be just as cheap to buy a replacement board from Mato and hold onto the blown board for other spares for when your new board dies (hopefully from something else).

D.

last night i tried to direcly wired the motor turret to the board and still does not move....i thought that some wires to the connecter are somehow broken, but it's working fine. i replace the transistor that burn up, but still no movement, guess u were right the Mp4024 might be damage, i have spare board tonight i will try to replace it see what happen next, i do not know the terms of electronic languge what would u call the item mp4024 in elect languge terms, my country here ic transistor and every electronic parts here are cheap, u know how much does a transistor cost here in indonesia? Rp100 divided by Rp9300 us currency US93c.......maybe i would find here so that i can replace it rather tahn i buy it from mate it would cost me new tank in indonesia. thanks for the reply, tommorow i will post my progress, thank you very much i need more of your advise...

I'd refer to MP4024 as an "single inline pinout (SIP) integrated circuit (ic)" with four high current darlington pairs. Toshiba call it a "TOSHIBA Power Transistor Module Silicon NPN Epitaxial Type" if that helps.

I can never buy parts in stores here in Canada. I have to order them online from Mouser, Digikey, Newark, etc. and shipping/minimum order is a killer. Generally not cost effective to try and fix small electronics unless I can save up and do a larger order of parts.

Hope you get things working.
D.

Well today i found di transistor Q1 a1300 is cheap thought only cost us93c so i bought 4 of it. The mp4024 its harder to find, but i already order it....yesterday when i remove the Q1 1300 transistor i found one of them has a small burn hole in it, well probly that is the cause, another question is that could it be possible that mp4024 it not damage but only the Q1 1300 transistor? tonignt i'm going to try it, also i found tha mp4024 is used in laser disc player in power supply. new discovery for me for a armature....

Any way I'll check if shipping or mail to your country is cheap maybe i could send some ic or transistor if you like.....just for favor.

I'll post my progress tomorrow and i still need your advise u are the only one who would help me, thanks

Yes, it could be that Q1 is your problem. Try replacing it, possibly even replace Q2 while you're at it.

D.

mAY BE THE LITTLE METAL THINGY INSIDE OF THE CONTROLLER, ON THE KNOB USED TO TURN THE TANK. SOMETIMES HENG LONG CONTROLLERS GO OUT FAST, U MAY WANT TO JUST GO TO www.hobbypartz.com to get a new heng long controller, its like 8 bucks pluse u get a new battery and charger and so on, just use the frequency chip that is still in your old controller and put it in the new one if you get it. that's what i did.

hi you guys are pretty smart and knows how to replace the resistor...[:-] Sometimes hl circuit board shows no sign or damage as matter of fact it has already faulty somewher that can not visually detected. You have the patience and knowledge, I dnt.

I had the same problem with my pershing - it turned out to be the transmitter ..... it was the one of the two pices in the pic, I just replaced it and then it woked fine ( got the new one from my old non S/S transmitter )

hei darkith, i did it, em sorry we did it, i replace the Q1 and Q2 and mp4024, and it work.....my turret now works again, played my thank for 2 hrs more and sign of burn, thanks you alot, because your advice now i know how to repair my tank, Now i'm moving to my second tank a panther Hl which i burn the H board as u said and i'm going to replace the burn transistor......thanks a lot, if you would want some transistor in indonesia i would gladly send u some u just need to pay the shipment........

and for other who put some advice thanks alot for the comment...., and for information i have long hours experience painting static models using my airbrush anyone who would like to have some tips i'll gladly help........