Is X54-3680-11 and updated version of x54-3680-10?

[lowpro]

Hi there! Like many of you out there, I bought a radio off of eBay. It’s a NX-800H. It had a remote head, but no cable. Didn’t need the remote head anyways, so I converted it back to a single unit. When I go to power it, there is no display and it make a soft clicking sound. Yes, sounds like same symptoms as others have had. I’m wonder if I also got the wrong face for this radio.

So what I’m seeing is that the display says X54-3680-11 on it. What I’m seeing in the service manual is that the part is x54-3680-10

So is the -11 and updated version or is it just the wrong display for the NX-800? I can’t seem to find an answer to it.

The seller ended up refunding me and letting me keep the radio, so I’d love to figure it out. I have seen faces for an NX-800, but I have seen some for the NX-700. I’m wondering if that would work. I’ll have to look at it some more, if the -11 version of this display is the correct one.

Thanks!

 

[kd4efm]

You check the ribbon cable?

 

[lowpro]

You check the ribbon cable?

I did. Tried with 2 different ribbon cables. Same outcome with both of them.

 

[kd4efm]

Parts search on kenwoodparts.com will give you the current mod for the display board. If the speaker pop (thump) and no display is with your other head as well, then something else is going on with the main board.

 

[tweiss3]

Recheck your connections. I almost drove myself crazy this past weekend when it ended up one cable wasn't pushed all the way in on one side when doublechecking dip switches that shouldn't (and didn't) need changed.

 

[lowpro]

Parts search on kenwoodparts.com will give you the current mod for the display board. If the speaker pop (thump) and no display is with your other head as well, then something else is going on with the main board.

I should clarify, I only have one head. Since the radio came with the remote kit (minus cable), I removed the remote kit and made it again a single unit. Since the remote kit has a ribbon cable itself, I removed that ribbon cable and tried using that cable as well to test on the main unit. Figured they were both straight 14 pin ribbon cables. Regardless, still same outcome with both cables.

 

[kd4efm]

Just to be sure I am reading the right, you have the KRK-10 kit with 1 radio, therefore removed the krk-10 kit out and dash mount, using the same ribbon cable from the head piece to the rf deck.

 

[kd4efm]

My main concern is the ribbon cable. E37-1379-XX
While the 30 point leads may look okay, there's maybe a break in the trace(s) from end to end.
Ohm it if you can, each pad.

 

[lowpro]

My main concern is the ribbon cable. E37-1379-XX
View attachment 193019

View attachment 193020

Correct, deleted the KRK-10 remote head kit. and reconnected the ribbon cable that goes from the display unit back to the deck, number 16 on the drawing.

The more and more I am researching, it seems like i've also become a victim to the seller putting on the wrong head on the radio. When I reached back out to him, he said that he had a few radios and had removed all the heads off to test them. Going off of the part number, I see a part number of X54-3680-11, but searching around, it seems like the correct display for the radio is a X54-3640-10. When I search that up, the updated display unit for that is a x54-404K-02, that works on both the NX-700 & 800. However, I never did find any results for what the X54-3680-11 display unit corresponds to. I appreciate all your help so far!

 

[kd4efm]

Correct, deleted the KRK-10 remote head kit. and reconnected the ribbon cable that goes from the display unit back to the deck, number 16 on the drawing.

The more and more I am researching, it seems like i've also become a victim to the seller putting on the wrong head on the radio. When I reached back out to him, he said that he had a few radios and had removed all the heads off to test them. Going off of the part number, I see a part number of X54-3680-11, but searching around, it seems like the correct display for the radio is a X54-3640-10. When I search that up, the updated display unit for that is a x54-404K-02, that works on both the NX-700 & 800. However, I never did find any results for what the X54-3680-11 display unit corresponds to. I appreciate all your help so far!

Photo the head, however. IF it does not have triangle next to the "HOME" button, then that's not the correct head.

AKA PREVIOUS POSTS, SAME THING with MIXED UP HEADS, and most likely the same seller you are dealing with (who needs a thump on the head)

Kenwood NX-700K No Power-on Issue

Hello, I've recently bought two "untested" TK-7180H radios, both having their harnesses cut and in quite a rough shape cosmetically (dirty + scratches). I have the Kenwood wire harness connectors and pins from DigiKey and so I made new harnesses for both units. The first unit required that I...

forums.radioreference.com

 

[n7maq-1]

 

[kd4efm]

View attachment 193021

this as well.

 

[lowpro]

Thank you both, I think now it def seems like it was the wrong head. I mean, what made it even more confusing is that I was looking at the board it says X54-3680-11, but I haven't seen anything else that says -11 on it, including what you guys posted.

Have to say, the seller instantly refunded me all of my money and let me keep the radio, which was super nice of him, no questions asked, as soon as he got my first email, without me even asking for a refund. All I had asked him was how he had tested the radio in the first place, if he didn't have the cable for the remote kit. That's when he said that he had taken off all the heads and somehow attempted to test them all. Sucks for him, since he was missing the cable for the remote kit, he actually had it listed even cheaper, as it was *missing* the cable. I just ordered another head head for the NX-700/800, so hopefully that will get it up and running. Thank you guys!

 

[tweiss3]

I'm not sure I'd say its the wrong head. Its listed on the NX-700/700H parts list, which is the VHF version, so the display should be the same for the NX800/800H.

 

[lowpro]

This is what I currently have, and from the service manual above, that would mean that it belongs to a TK-5720, correct?

 

[tweiss3]

NVM, I am an idiot and my brain skipped over the middle digits. Yes, that is correct.

 

[tlemke940]

i think there may be something else going on as i have a few working nx-700 radios here on my bench and i poped the head off of a few and on the board right under the speaker it has the same part numbers as the tk-5720. last i knew the tk-5720 and the NX-700 platform radios are identical as far as hardware the firmware is the main difference between them. ( don't try loading the other radios firmware to try and convert it to P25. i already tried and it needs the CPU reprogrammed too) the heads should be the same ether way.

 

[lowpro]

So I ordered a replacement head from a NX-700, which also works for the NX-800. Once I received my eBay purchase, plugged it in and…..it worked!

So I was convinced that the radio seller had put on the wrong head before he sent it out.

But I was curious as what the part number says on the boards. As it turns out, they look identical! The bottom board is the one that works, the top one I couldn’t get to come on.

 

[tlemke940]

It could have just been a bad head i have came across a few of those not shure what's wrong with them but thay just didn't want to power on.

 

[lowpro]

Yeah, def seems like it now. Seller apparently tried to test them somehow. If anything, glad I was able to get a working radio out it for $50, the cost of the replacement head.