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Need a 5000A HTRX board

Alan C
Alan C Member ✭✭
edited October 2019 in FLEX Series (Legacy) Radios
Appears to power up OK, but the 5000A refuses to talk to my computer via Firewire (no device found). Tried everything under the sun (even another computer). 4 Different FW cards (two with TI chipset). Different cables. Different Power SDR versions. Followed the Quick Start guidance up religiously. This is my third 5000A and I am quite familiar with the machine.

I have even replaced the Texas Instruments 1394 Interface IC (IC53). 64 lead QFP. It made no difference - and all voltages check good. Even checked the two crystals connected to this chip - checked right on frequency.

All components and PC boards look pristine. Not even any dust.

Long shot - if someone would have an HTRX board, I'm sure it would solve my issue.
This is the board with the power switch.

My serial number is 4311-3472

HTRX board pic:






Alan, W4FBI



Comments

  • Neal_K3NC
    Neal_K3NC Member ✭✭
    edited September 2019
    Alan

    Could the little teeny coax jumpers be bad or connected to the wrong teeny little sockets?
  • Neal_K3NC
    Neal_K3NC Member ✭✭
    edited September 2019
    You also should consider the guy that repairs the legacy radios for Flex. Called Troy Radio Service
  • Alan C
    Alan C Member ✭✭
    edited September 2019
    Neal,

    Yes, all connectors are correct and seated properly. (I took photos before/after)

    I will check with Troy Svc

    thx,

    Alan
  • Alan C
    Alan C Member ✭✭
    edited October 2019
    OK, Allright!  I think that I am the only one on Earth that didn't know this.

    When installing Power SDR, make sure the radio is OFF (per installation guidance). No problem.

    What the installation guidance does not tell you is: DO NOT remove the 13.8v power to the radio.


    I turned off the Power Supply (in addition to the front power switch) and installed Power SDR. I get "no device found" when cranking up Power SDR. I fought with this for two months (different FW cables and cards, etc), until I found out (by accident) that 13.8v power must be applied to the radio when installing Power SDR (front switch off).

    Perhaps this note will help someone in the future.

    duh...


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