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Thread: Maha MH-C9000 Disassembled

  1. #1
    Flashaholic* EvilLithiumMan's Avatar
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    Default Maha MH-C9000 Disassembled

    Here's the inside of the MH C9000 charger. It contains three subassemblies - the PCB, the LCD display and the one piece switch actuator:



    Last edited by EvilLithiumMan; 12-27-2006 at 08:35 PM. Reason: Changed "parts" to "subassemblies"
    SF G2+KT1, C3, E1E. SL Poly Stinger. Arc LSHF-P. MagCharger, AA MiniMag w/ MM+WO LIII S. PT20. PT40. S&W FL10. Etch-A-Sketch. Mister Microphone.

  2. #2

    Default Re: Maha MH-C9000 Disassembled

    thats it?.........hmmmmm, i feel ripped off now, i was expecting some Ram slots and a Hard drive...................thx for showing.

  3. #3
    Flashaholic* EngrPaul's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    That's the way you make it.

    Believe me, the fewer parts the better.

  4. #4
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    Default Re: Maha MH-C9000 Disassembled

    Counting the fully-populated PCB as a single part is...well, it's not the only way of counting "parts"...
    MD3 | M6CB | Gladius/SSCP4 | A2-HA-WH | A2-HA-YG | A2-BK-WH | Z3/KT2 | M2 | C2 | 6Z | 6P | U2A | K2MS | E2e/KL4 BK | E2DL | E2D | E2L | L2 | Milky ML1/SSCP4 USWOH McR18j | L1-BK-RD | L1-HA-WH | L1-HA-WH Cree | L1-HA-RD | 3P | E1B | E1L | E1E-HA-BK | E1W | 618FA | G2

  5. #5

    Default Re: Maha MH-C9000 Disassembled

    uh......i was joking you know?........you do know right?...............LOL

  6. #6
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    Default Re: Maha MH-C9000 Disassembled

    Each slot has it's own separate switching power supply-very nice and exactly as it should be. Also, liberal use of ground planes and bypassing seems adequate. Looks like a few commodity ICs (opamps?) are on that board. Fine by me-using proven chips is always good. Seems to be a great design overall.

  7. #7
    Flashaholic* EngrPaul's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Can you show the other side of the LCD, you know... where the LIGHT EMITTER is?

    This is the candle power forums, you know!

  8. #8
    Flashaholic* koala's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Mosfets are alot bigger than those in the BC-900. Which is good.
    Arc4+ mods/repair. LED drop in for SF E-Series. Onion Rings for SF A2.

  9. #9
    Flashaholic* EvilLithiumMan's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Quote Originally Posted by EngrPaul
    Can you show the other side of the LCD, you know... where the LIGHT EMITTER is?

    This is the candle power forums, you know!
    I didn't deem my other shots exciting enough for posting, but, if you insist:


    SF G2+KT1, C3, E1E. SL Poly Stinger. Arc LSHF-P. MagCharger, AA MiniMag w/ MM+WO LIII S. PT20. PT40. S&W FL10. Etch-A-Sketch. Mister Microphone.

  10. #10
    Flashaholic* EngrPaul's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Thanks ELM. It seems that Red/Black wire goes into some sort of thin white wafer. Hmmm.....

  11. #11
    Flashaholic* EvilLithiumMan's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Sheesh. Haven't I done enough by ripping apart my new charger before using it even once so you can see it's guts? Now you want me to disembowel the display just so you can see where the wires go? I'd have to be crazy to do that.




    It's pretty much your standard LCD "sandwich" - the liquid crystal display is mated against the driver/backlight (the white ceramic piece). There are about 24 contacts between the driver and LCD. But because the signals are multiplexed, only a pair of wires are required for the assembly itself. If this is all mumbo-jumbo sounding, you can search the web on how a liquid crystal display works.
    SF G2+KT1, C3, E1E. SL Poly Stinger. Arc LSHF-P. MagCharger, AA MiniMag w/ MM+WO LIII S. PT20. PT40. S&W FL10. Etch-A-Sketch. Mister Microphone.

  12. #12

    Default Re: Maha MH-C9000 Disassembled

    Images not showing up for me. Could be my works blocking them though.
    The Lonely Raven
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  13. #13
    BVH's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    They show up for me
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Syniosbeam by Enderman

  14. #14
    Unenlightened
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    Default Re: Maha MH-C9000 Disassembled

    Can someone point me the heat sensors?

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    Flashaholic thekobk's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    I also cant see the image.

  16. #16
    Flashaholic* EvilLithiumMan's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Quote Originally Posted by Phatboyc
    Can someone point me the heat sensors?

    I'm guessing TS1 - TS4 are the heat sensors (thermistors?)



    If the images aren't showing up, just do a refresh and that should work. I don't have much bandwidth and my damn roomate spends 25 hours a day downloading DVD's. I've considered beating him to death, but have decided against it because:

    1 - It's not right.
    2 - I'd be the only suspect.
    3 - I need his retirement check to help with the rent.
    SF G2+KT1, C3, E1E. SL Poly Stinger. Arc LSHF-P. MagCharger, AA MiniMag w/ MM+WO LIII S. PT20. PT40. S&W FL10. Etch-A-Sketch. Mister Microphone.

  17. #17
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    Default Re: Maha MH-C9000 Disassembled

    With firefox you will see the pictures, not with IE.
    Download here

    Anders

  18. #18
    BVH's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    I'm using IE7 and am having no issues seeing all the pics.
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Syniosbeam by Enderman

  19. #19
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    Default Re: Maha MH-C9000 Disassembled

    Quote Originally Posted by EngrPaul
    That's the way you make it.

    Believe me, the fewer parts the better.
    I actually thought there would be less parts than what's shown. Not being familiar with the chargers features, I would expect that with this level of sophistication, it would also do my dishes

  20. #20
    Flashaholic* TinderBox (UK)'s Avatar
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    Default Re: Maha MH-C9000 Disassembled

    I would love to have seen a usb port installed, for firmware upgrades and pc monitoring of the charging cycle.

    John.
    "Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life." - Terry Pratchett.

  21. #21
    Flashaholic* EngrPaul's Avatar
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    Faint Re: Maha MH-C9000 Disassembled

    Quote Originally Posted by EvilLithiumMan
    Sheesh. Haven't I done enough by ripping apart my new charger before using it even once so you can see it's guts? Now you want me to disembowel the display just so you can see where the wires go? I'd have to be crazy to do that.
    SORRY! I honestly wasn't suggesting you go further.

    I was thinking about an LED replacement that may be necessary some time down the road.

    Just the other week I replaced the near-death LED's in my Philips clock radio. There was 3 x 3mm LED's along the one edge of the optic panel. They were easy to replace.

    Now with this flat panel, I don't know how I would proceed. I suppose it's not like the panel can't be read without backlighting...

  22. #22

    Default Re: Maha MH-C9000 Disassembled

    Can you comment on the quality of the switches used for user input? Like many, my well worn BC-900 has developed "switch bounce" that makes it a pain to use. I'm hoping the C-9000 will stand up to long term use a lot better.

    Mike

  23. #23
    Flashaholic* EngrPaul's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Those switches look (from the pictures) very standard and of good quality, with my experience with that type of component.

    I bet you could easily grab a few from Digikey when the time comes.

  24. #24
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    Default Re: Maha MH-C9000 Disassembled

    Quote Originally Posted by CM
    it would also do my dishes
    It probably could if you could find a way to fit your dishes in it.
    Bill

  25. #25
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    Default Re: Maha MH-C9000 Disassembled

    Hi Evillithiumman,
    On the PCB board What are the 2 black round things that have like a hard wax around them and is just behind the Ac plug-in and between the 2nd+3rd slots. Those 2 things are what I believe gets the charger so hot during the charge cycle. You can feel the heat right at that spot during the charge. Sorry for my lack of knowledge. Thank you.
    Dan


    Quote Originally Posted by EvilLithiumMan
    Here's the inside of the MH C9000 charger. It contains three subassemblies - the PCB, the LCD display and the one piece switch actuator:




  26. #26
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    Default Re: Maha MH-C9000 Disassembled

    Quote Originally Posted by dekelsey61
    Hi Evillithiumman,
    On the PCB board What are the 2 black round things that have like a hard wax around them and is just behind the Ac plug-in and between the 2nd+3rd slots. Those 2 things are what I believe gets the charger so hot during the charge cycle. You can feel the heat right at that spot during the charge. Sorry for my lack of knowledge. Thank you.
    Dan
    Those appear to be a couple of capacitors.

  27. #27
    Flashaholic* EngrPaul's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    Perhaps the heat comes from the opposite side of the board, not the caps.

  28. #28

    Default Re: Maha MH-C9000 Disassembled

    the keys, display and control method are better than bc-900, keys are good feel.

  29. #29
    *Flashaholic* LuxLuthor's Avatar
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    Default Re: Maha MH-C9000 Disassembled

    I'm worried that after showing those great pix that Evil Lithium Man didn't get it all put back together right! I wouldn't have.

  30. #30

    Default Re: Maha MH-C9000 Disassembled

    Hi EvilLithiumMan,

    Could you provide high resolution pics? the pics you posted has little details on the circuitry.

    However, I can see there are only 3 electrolytic capacitor. it is reasonable to suggest the voltage on the battery is sawtooth type since each channel doesn't have a capacitor for smoothing it.

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