Radio


Information and questions on GL1500 Goldwings (1988-2000)
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Cooter26
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Radio

Postby Cooter26 » Mon Sep 21, 2015 11:19 am



Got a 88 Goldwing 1500 radio will not keep radio stations when key is off what could it be



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virgilmobile
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Re: Radio

Postby virgilmobile » Mon Sep 21, 2015 11:31 am

The radio has a memory"keep alive" circuit.its fused.i think a 5 amp.
I'm drawing a blank of its location tho.Check the fuse block.

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NVSB4
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Re: Radio

Postby NVSB4 » Mon Sep 21, 2015 12:27 pm

First, check fuse #9 and that the plugs going into the radio are seated firmly.
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WingAdmin
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Re: Radio

Postby WingAdmin » Mon Sep 21, 2015 12:28 pm

Fuse 13, in the fuse box on the left hand side. You might have to loosen the left saddlebag to gain access:

GL1500 radio memory fuse
GL1500 radio memory fuse

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NVSB4
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Re: Radio

Postby NVSB4 » Mon Sep 21, 2015 12:56 pm

Sorry, I know that is the panel that I have on my '92, but found this picture that says it is from an '88 model that's different.
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Re: Radio

Postby WingAdmin » Mon Sep 21, 2015 1:41 pm

NVSB4 wrote:Sorry, I know that is the panel that I have on my '92, but found this picture that says it is from an '88 model that's different.


You're correct, I didn't see the original poster's 1988 year. In this case, it is fuse 9, a 5 amp fuse that likely needs to be replaced.

Cooter26
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Re: Radio

Postby Cooter26 » Fri Oct 02, 2015 2:37 pm

Ok I check that and mine is just relays no fuses in there to what else could it be because the other feels that I checked was fine

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Re: Radio

Postby WingAdmin » Mon Oct 05, 2015 10:48 am

Does the clock also lose the time when the power is turned off?

Cooter26
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Re: Radio

Postby Cooter26 » Tue Oct 06, 2015 1:36 pm

WingAdmin wrote:Does the clock also lose the time when the power is turned off?

No that is just fine

Cooter26
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Re: Radio

Postby Cooter26 » Thu Dec 03, 2015 1:06 pm

Could someone help me please

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Re: Radio

Postby WingAdmin » Thu Dec 03, 2015 1:20 pm

Cooter26 wrote:
WingAdmin wrote:Does the clock also lose the time when the power is turned off?

No that is just fine


Are you sure it doesn't just stop? If you set the clock to the correct time, then turn the bike off for 5 minutes and turn it back on, has the clock advanced 5 minutes, or is it still at the same time you left it when you turned it off? Also, how long does the bike have to be off for it to lose the station settings? Will it do it even if the ignition is switched off for just a second or two, or does it take a few minutes?

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virgilmobile
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Re: Radio

Postby virgilmobile » Thu Dec 03, 2015 2:05 pm

When I look at the schematic,I find that the CPU in the radio has all the functions of memory and the clock...It does require a continuous.12 volts on the "backup" wire to retain it's memory...It's pin 30 on the radio connector.
Its on the outside edge toward the antenna connector.
If the clock does in fact retain the proper time,the backup power is OK..
The next question...When you select a radio station..then push the "mem" button..does a "M" show up on the display above the channel number?
Do the other buttons work also? Especially the "AMB" and "HS/SP" buttons..Do they also show on the display? There part of the same keyboard matrix wires.
If you select a channel,push the "mem" button,push the "amb" button....turn off the key for 1 minute...when you turn the key back on..what does the display show...does anything stay as you set it?

Cooter26
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Re: Radio

Postby Cooter26 » Thu Dec 03, 2015 5:59 pm

Ok the clook works and I can play tapes and set the "m" and as soon as I trun the bike off and trun it back on all the stations are gone and it goes back to the am that it was on fm when I truned it off

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virgilmobile
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Radio

Postby virgilmobile » Thu Dec 03, 2015 6:17 pm

Good details.One more question.
Can I assume that the clock does keep time and not reset back to 12:00 each key cycle?
If so,this is leading me to a unusual problem at the radio logic board.

Cooter26
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Re: Radio

Postby Cooter26 » Thu Dec 03, 2015 8:10 pm

Yes that is correct the clock is fine so what do I have to do now to fix this

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virgilmobile
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84 GL 1200 I

Re: Radio

Postby virgilmobile » Thu Dec 03, 2015 8:31 pm

OK.I've had a brain fart....Sheesh..in should have seen this...The radio does not send data for the LCD display clock....only data for the other functions.The entire clock circuit resides in the LCD assembly.
This realization leads me directly to the loss of 12 volts(all the time) on the memory wire as described.
Somewhere there is no volts getting to the radio pin 30.either a bad connection at the plug or the fuse circuit...
I'd also have to look to verify but does your cruise work?It may be tied to the same circuit.I'm not sure.

Cooter26
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Re: Radio

Postby Cooter26 » Thu Dec 03, 2015 8:38 pm

Yes my cruise does work

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virgilmobile
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Radio

Postby virgilmobile » Thu Dec 03, 2015 8:47 pm

OK.I'm mobile for about a hour.I'll look at the pinout of the back of the radio asap.Do you have a volt meter and the ability to probe the connections?

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virgilmobile
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78 GL1000
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Radio

Postby virgilmobile » Thu Dec 03, 2015 8:59 pm

OK.Go to the manuals section.Download the gl1500 Panasonic radio manual.Goto page 3.
This shows the pinout of the radio.Probe with your voltmeter between pin 30 and 24.
Pin24 is ground and 30 is or should be continuous 12 volts.Do not use your meter attached to the frame for ground...use pin 24.
If there is no volts,review the memory or backup fuse.If there's volts,internal repairs of the radio are next.

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virgilmobile
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78 GL1000
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82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Radio

Postby virgilmobile » Thu Dec 03, 2015 10:06 pm

One more thing.Keep in mind that I'm looking at schematics on my phone and I'm not by your bike.The best I/we can do is point you to the area most likely.
In reviewing the bikes schematic,I also find that fuse #9(backup) also feeds the LCD cluster. I do know that if you pull the fuse, the clock will reset....This means that your fuse and its wire to the LCD are just fine.This also points back to the radio area.Either there is no volts on that wire or a connection inside the radio has failed.
Your next step is to lift the top shelter and get to those pins.Its possible that inside the radio,where the pins make connection to the circuit board,there's a cracked solder joint.

Cooter26
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Re: Radio

Postby Cooter26 » Sat Dec 05, 2015 4:14 pm

Ok thank you but is there some where I could send it to get look at I'm not that good at that stuff to take it a part like that

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virgilmobile
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Radio

Postby virgilmobile » Sat Dec 05, 2015 5:26 pm

If you verified its not a problem with the bike or the connector plug on the harness, I've heard a company called Sierra can fix it.They should be listed in the "vendor" area.I'd make contact with them before sending it to let them know about the problem.

Cooter26
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Re: Radio

Postby Cooter26 » Sat Dec 05, 2015 11:02 pm

Ok how many wires in the harness going to the radio is hot all the time

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virgilmobile
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83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Radio

Postby virgilmobile » Sun Dec 06, 2015 9:57 am

Just one,......................

Cooter26
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Re: Radio

Postby Cooter26 » Sun Dec 06, 2015 2:52 pm

Ok I think it is my radio then I'm going to have to send in




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