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Thread: HL2500FX

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  1. #1
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    HL2500FX

    Any info where I could get a Shop Manual. My fan runs hi speed but the power and Meter Lights don't go on. Have a small Schematic but no explanation. 73 Kurt

  2. #2
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    I put this Question also in the Amp discussion since I was confused, but it belongs here. I have the error code: AC 3V(U?) UNDER LINEVOLTAG. There no 3V Power Supply. What does it mean ?
    If you can help please let me know. 73 Kurt

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    Found the error problem, ripped of an wire on the 100V PS

  4. #4
    Hello Kurt,

    Have you replaced the meter lamps? My HL-2500FX's PV/kW lamp is out and I'm not sure if I can replace it. Is getting access to the lamp difficult? I know it's a common 12v wheat lamp (which I have on hand) but it looks like it would be a big job to take the amp apart to replace the bulb. Is it difficult to do so?

    Sam
    K8NOS

  5. #5
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    The front panel comes off on the 2500 without problem. There are 2 screws on each side too,.Sorry, I forgot most since I fixed it a while ago. 73

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    Hello Sam.
    you must be also one with the hl2500. I believe only 16 are sold here?
    I had no bad Lamps. But the front unscrews easy ,I believe two screws on each side but I forgot. Good luck. 73 Kurt

  7. #7
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    Quote Originally Posted by WB2YVY View Post
    Hello Sam.
    you must be also one with the hl2500. I believe only 16 are sold here?
    I had no bad Lamps. But the front unscrews easy ,I believe two screws on each side but I forgot. Good luck. 73 Kurt

    I think 40 was sold in total. Of that 20 in the USA.
    I also have one and I personally know another Ham who has one.
    Four that I have heard of have had problems. Always seems to be the same thing. Do Not run this Amp past legal limit or it will either kill a power supply or knock out some of the FET's.

    Rob

  8. #8
    how to open the 2500fx to transmit on all bands, having problems with 24 mhz

  9. #9
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    Twice $400+ Gate to Drain short. Ireplaced the sd2933 to vrf 2933
    But the second time I seen a flash. Checking with the micro scope I seen lines from the feedback resistor to ground. Drain> C11>R11,21,26,36,41,51>T2tranformer. The problem was where R11 is away from the Drain.
    Right on that spot it arced to ground. You need a Microscope to see it. FET's go before there is much arc damage.
    Fix: I used a dremmel tool to grinned into the Board. Then I used J-B epoxy to fill and add to all other spots.
    Used a separate PS. Checked first repaired stage to 800 watt, later the combined Amp to 1.8 KW. It is working for a few weeks with out problems.

  10. #10
    where can i get a service manual for a hl 2500fx

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