Standard Horizon Remote Mic

[lehighsail]

My VHF remote mic stopped working and traced the problem down the the connector at the helm that the mic plugs into. Seems that the pin in the 6 o'clock position is no longer there. May be the ground pin?

Can these pins be repaired or can I get a new end connector and splice it onto the wire coming from the radio below? I would really like to avoid running a new cable up to the helm.

Any help would be appreciated. Thanks.

 

[Don S/V ILLusion]

You can buy a replacement connector but I wouldn't recommend it unless you are adept at soldering.

Among the largest selection online is Mouser.com. Search under Audio connectors and under the tab DIN connectors you will find 370 different ones with pictures and pin-outs.

 

[Jake N Eggs]

The missing pin is most likely in the female portion of the connector.

 

[Whatfiero1]

For a temp fix I just shove a sewing needle in connection

 

[LeslieTroyer]

Mine bit the dust earlier this year, not being sure if it was a fault in the RAM or wiring or radio I tested it on @jssailem boat. It didn’t Turn his radio on as it should. So only after order a new Mic John tells me he forgot to plug the radio into power. The good news is the new RAM fixed the problem

Les

 

[jssailem]

And once @LeslieTroyer had identified the power deficiency in my boats radio, I plugged it in and it worked. This was a win win.

 

[Chris Patterson]

Funny, we just had this happened. I was thinking about buying the whole new plug and cable and cutting the cable a few inches back from the plug and can do my connections there to keep from fooling with the plug.

 

[jssailem]

It is possible. The wires are tiny.

 

[lehighsail]

Update: first, smack me in the back of my head.......it's an iCom HM157 remote mic. Not that it really matters.
Yesterday, I cut the wires and soldered the very tiny wires including the Black wire that was two wires internally. Plugged in the mike and turned on the radio and the mic worked! Almost. All the functions work and it broadcasts. The only thing not working is the speaker in the mic. I checked all connections and all seemed fine. I saw a post somewhere that maybe the speaker wire inside the mike is loose. Will check that today.

 

[mcrow33]

As someone who has toasted two SH RAM. Be sure that the radio is turned off before connecting or disconnecting the RAM.

 

[jssailem]

Be sure that the radio is turned off before connecting or disconnecting the RAM.

There is a cautionary tag attached to the cable. I thinks sometimes folks forget it that hurry to wrap up the sail and begin the party. And SH gets to sell them a replacement.

 

[jviss]

Update: first, smack me in the back of my head.......it's an iCom HM157 remote mic. Not that it really matters.
Yesterday, I cut the wires and soldered the very tiny wires including the Black wire that was two wires internally. Plugged in the mike and turned on the radio and the mic worked! Almost. All the functions work and it broadcasts. The only thing not working is the speaker in the mic. I checked all connections and all seemed fine. I saw a post somewhere that maybe the speaker wire inside the mike is loose. Will check that today.

I have had that very same problem with two IC-M502 radios and the HM157 remote mic. There is no short circuit protection in the audio output circuit that is inside the M502 that drives the speaker in the remote mic. A short, which in my case was caused by salt water, will blow that circuit. The only recourse is to send the base unit to Icom for repair.

Not saying that's your exact problem, but it was certainly mine, with the same symptoms.

 

[Meriachee]

And once @LeslieTroyer had identified the power deficiency in my boats radio, I plugged it in and it worked. This was a win win.

Now what’s going to be the excuse for not answering the hail @jssailem ?

 

[jssailem]

I await your hail.

 

[lehighsail]

JVISS, I will contact iCom today. Thanks.

 

[jviss]

JVISS, I will contact iCom today. Thanks.

Let me know what they say! I understand the IC-M502 is no longer supported, not sure about repairs. I have one (spare) that has that problem, and two installed on my new-to-me boat.

 

[lehighsail]

To save me some time, do you know what the new model with the same features is?

 

[jviss]

I don't. There is an M502a - I had one of those, and one of the non-"a" versions, on the old boat. I'm not sure which versions are on the new boat.

Perhaps like you, I'd like to know of a newer model that fits in the same hole!

 

[windward54]

The ICOM M502 (both versions) are no longer supported by ICOM. I just checked as the audio circuit to the remote mic just failed on my radio. Guess it is time for an update.

The M506 is slightly wider and longer than the M502. Not an issue. The problem is the remote takes a different cable. So I’ll be installing the radio , less then an hour, and then spending most of the day pulling a new remote cord for the mic. Why can’t manufacturers plan upgrades better? OK, it’s a rhetorical question.

 

[jviss]

If we could get the part location (reference designator) and part number for the blown audio component, it would probably be a cinch to replace it. Think they'll tell us?

I had the schematics once. Not sure I can find them again.