Motorola XPR8400 bricked?

[Nextgentow88]

Hi all i just purchased this repeater xpr8400. The person i got it from bought it at auction and said he couldnt program it ofcourse no further info

When i power it up the leds dont cycle like they usually do just the solid green power light comes on and stays on as well as the fan. No other lights ever come on.

I snooped around a little bit checking all the cable connections they are good. Next i checked power out from the supply good.

I checked the two boards led board in front and control board the leds worked when i jumped them.
I checked every pin to every connector they all seem to have power going through where they should even both radios, so i would guess they are not completely fried. Also when i plug an ethernet cable in the rear jack the two little lights on it do not come on. The pins have some mv current going through them.

I tried a bunch of cps that i could get from mol most of them are only a few years old
the repeater was made in 2010 version on the tx radio label is R01.08.10 i tried depot tool and rdac but not lab tool as i couldnt find one all with the same result cant read or write as if nothings connected.

Im ready to use this thing as a boat anchor is there a hidden reset or something im missing?? im pulling my hair out over here

thank you all in advance..

 

[cavmedic]

I’m sitting on one with similar issues. When you plug the programming cable in, it doesn’t pull an ip, nor does it show any network activity on a network.

Also tried reading directly from the radios as well with no luck. I tossed it under the bench as I do not have time to obsess over it right now.

 

[Nextgentow88]

I tried the same here plugged prgramming cable directly into radios and nothing. I read somewhere that the only led controlled by hardware is the green power led and all others are software controlled. After all my poking around i keep feeling like its a software issue

Im lost but i know this has had to have happend to others hopefully someone can give us some insight sad part for me is i sold a perfectly good repeater to get this one.

 

[Nextgentow88]

What i also find crazy is there is a ton of info videos and guides of every repeater you can think of online.
Even one off models that were made only once but look up info on the 8300 8400 its like a ghost town

 

[cavmedic]

If I recall when going through the service manual, the front board holds the USB-Ethernet chip. For some reason that’s where I stopped at as I couldn’t find any of them to swap and see if that was the issue or not as I didn’t want to cannabalize a working unit to test.
I figured when and if another one goes down, then I’ll be able to start swapping parts.

 

[Nextgentow88]

No one has had this happen and was able to fix it? im still stuck in circles here

 

[a417]

Hate to say it, but every part of this sounds like a scam. I never would have bought the hardware if they couldn't program it, unless I was buying it at junk rate for salvage. Sorry, but I think you got beat.

Have you put an oscilloscope (and then wireshark) on the ethernet port to see if anything is happening?

 

[Nextgentow88]

I paid 175 for it after he have me back 260 dollars so i think even to sell for parts i didnt get beat wherever the repeater was it was in service. I just think possibly the firmware was never upgraded and no one has such an old cps where ive searched. I dont own a wireshark to test the ethernet but i could run a software on my pc that will do the same. I have a spec analyzer but what should i look for with that if the repeater isnt tx or rx. I dont know the frequencies to trigger it.

 

[a417]

I paid 175 for it after he have me back 260 dollars so i think even to sell for parts i didnt get beat wherever the repeater was it was in service. I just think possibly the firmware was never upgraded and no one has such an old cps where ive searched. I dont own a wireshark to test the ethernet but i could run a software on my pc that will do the same. I have a spec analyzer but what should i look for with that if the repeater isnt tx or rx. I dont know the frequencies to trigger it.

A spectrum analyzer isn't an oscilloscope, and wireshark is a program that allows you to analyze network traffic. You don't even need a great oscilloscope, but if you can determine that the ethernet port is live - wireshark might allow you to find out what is coming out of it.

 

[mikewazowski]

Change out the controller card.

 

[cavmedic]

I paid 175 for it after he have me back 260 dollars so i think even to sell for parts i didnt get beat wherever the repeater was it was in service. I just think possibly the firmware was never upgraded and no one has such an old cps where ive searched. I dont own a wireshark to test the ethernet but i could run a software on my pc that will do the same. I have a spec analyzer but what should i look for with that if the repeater isnt tx or rx. I dont know the frequencies to trigger it.

If your PC doesnt acknowledge the network connection when you plug into the back of the repeater, its pretty much one of two of those boards

 

[Nextgentow88]

Ok im going to change out the controller card also got a fresh install of win xp.The ethernet port doesnt do anything the little light on the jack dont come on and my pc sees nothing. Also keep it on the down low lol but if you guys need i think i found a source of brand new oem boards as many as we want i will be ordering mine next week on Thursday if they are legit i will take orders.Pm me if your interested!!!