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Galaxy 2517

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Galaxy 2517

Post by smoke blower » Sunday, 28 May 2017, 14:05 PM

I am trying to get some help here my Galaxy 2517 with the 1969 finals has a clicking sound. I was talking on USB and all of a sudden the radio just started going click, click, click ,click just like a machine gun it does it on am also. When I unkey it is like a relay stuck it takes a few minutes before the receive starts.

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Re: Galaxy 2517

Post by MDYoungblood » Sunday, 28 May 2017, 16:53 PM

A ticking sound is most likely cap shorting, which one I can't say without looking in the radio.

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Re: Galaxy 2517

Post by sonoma » Sunday, 28 May 2017, 17:06 PM

good possibility of a leaky cap, also make sure the connectors from the face to the main board are all hooked up good. even verify the echo board connectors are good. look for bad solder at the connector pins.

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Re: Galaxy 2517

Post by smoke blower » Monday, 29 May 2017, 6:23 AM

Ok will do it is just wierd the radio recieves good and swings a good 40 watts or so when I say something in the mic boy that thing just starts clicking away like I said sounds just like a machine gun.

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Re: Galaxy 2517

Post by smoke blower » Monday, 29 May 2017, 16:17 PM

I checked around for a bad solder joint and checked all the plugs but still doing the same thing.

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Re: Galaxy 2517

Post by smoke blower » Monday, 29 May 2017, 16:17 PM

I didn't seem to see any issues with the plugs or solder joints

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Re: Galaxy 2517

Post by sonoma » Monday, 29 May 2017, 19:56 PM

+check the diodes d70 to d78. I think that covers all of them in the mic circuit. have you tried another mic? I have never seen one with out a relay make this kind of noise.

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Re: Galaxy 2517

Post by smoke blower » Tuesday, 30 May 2017, 6:10 AM

Ok I will check them this afternoon when I get home from work. Yeah it is wierd no one has ever heard of this happening. But like I said I was talking on it then all of a sudden it just started going off like a machine gun until I unkeyed the radio. I also tried different mics same Problem

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Re: Galaxy 2517

Post by sonoma » Tuesday, 30 May 2017, 10:37 AM

be sure to check D77 close. it can make a radio do some funny things when it goes bad. i have seen it hold the radio in TX mode and turn the radio off then it would RX fine until you would key up then make it hang in TX mode again.

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Re: Galaxy 2517

Post by Stoneman » Tuesday, 30 May 2017, 14:55 PM

Did you open radio and try to pin point where the clicking is coming from??

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Re: Galaxy 2517

Post by smoke blower » Tuesday, 30 May 2017, 15:08 PM

I checked those diodes all check good. It is almost like the TALKBACK has something to do with it if I turn it on it doesn't stick in the clicking mode but turn it off it starts. I have taken a video of what it is doing but I can't send to you Sonoma it says file to big so I don't know

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Re: Galaxy 2517

Post by smoke blower » Tuesday, 30 May 2017, 15:10 PM

The clicking is coming through the speaker but the radio isn't keyed up or no output when it does it just through the speaker but if I key the radio up then you can hear it on a test radio

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Re: Galaxy 2517

Post by smoke blower » Tuesday, 30 May 2017, 15:50 PM

I just noticed I can turn the volume wide open and it starts popping real bad turn it down it stops turn it wide open it starts again. It can be receiving fine with volume a 1/4 the way open turn it more than half way it starts popping through the speaker

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Re: Galaxy 2517

Post by sonoma » Tuesday, 30 May 2017, 16:09 PM

Ok check to see how much voltage is on the board. the power supply could be putting about 20 volts or more. if the voltage is at 13.8 then start checking the caps and the audio IC for a popping noise in that area. I just talked to my buddy at the shop and he thinks that could be your problem

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Re: Galaxy 2517

Post by sonoma » Tuesday, 30 May 2017, 16:11 PM

also check to see if the meter lights are real bright.

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Re: Galaxy 2517

Post by sonoma » Tuesday, 30 May 2017, 16:45 PM

Smoke blower I use to have your phone number but not sure what I did with it. I found 577's number but not yours. if you have 13.8 volts on the board then look at the caps by the audio IC. does the radio do this when it is cold or does it need to warm up a few minutes. if so use some cooling spray on the caps and audio IC to see if it goes away for a few minutes.when you say it has RX and TX is audio in there with the noise.

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Re: Galaxy 2517

Post by pabxone » Tuesday, 30 May 2017, 16:51 PM

Are you using the original factory microphone ?

I wonder if it is something as simple as microphone wiring or compatibility issue ?

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Re: Galaxy 2517

Post by sonoma » Tuesday, 30 May 2017, 16:57 PM

I was going to call him to hear what it sounds like. but I have lost his number. maybe he will get back in here to see what info has been given to him. I was wondering if the transformer in the power supply is going out.so many things can cause this and trying to help on line gets hard at times. I was wondering if he has a audio tracer. that was some thing I bought when I 1st started working on radios.

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Re: Galaxy 2517

Post by sonoma » Wednesday, 31 May 2017, 4:04 AM

I got your videos this morning. be sure and check the voltages from the power supply when you get home tonight.is the talk back built into the echo on this radio. I have only seen one of these in my life. it was just to peak it back then.have ran across a popping issue a few times before and it was the transformer going out and a cap at the audio IC and even a audio IC causing popping. when I talked to my buddy at the shop last night he was thinking the same items. I will call him today and let him listen to the videos also. be sure to let me know if you have TX and RX audio with the antenna hooked up when you do the voltage test .

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Re: Galaxy 2517

Post by sonoma » Wednesday, 31 May 2017, 8:43 AM

after you check the voltage and the audio ic and parts pull the mirror board out and see if it stops. if it does not stop then check IC7 the 8 leg chip in the audio circuit.I think it it a 4558 or some thing like that part number.

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Re: Galaxy 2517

Post by smoke blower » Wednesday, 31 May 2017, 8:54 AM

Ok sorry it took so long I am busy as crap today on lunch break right now. I am glad you got the videos you can hear that piping sound I am talking about. I will say the radio recieves good and the radio keys like 2watts and swings like 40 or so watts

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Re: Galaxy 2517

Post by smoke blower » Wednesday, 31 May 2017, 8:58 AM

I am not sure if the TALKBACK is part of the radio or in the echo board.

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Re: Galaxy 2517

Post by smoke blower » Wednesday, 31 May 2017, 16:05 PM

I will have to wait until​ tomorrow night to get back working on it I am still working

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Re: Galaxy 2517

Post by sonoma » Wednesday, 31 May 2017, 16:13 PM

I had my friend also listen to the videos and he said he thinks it is either to high of voltage to the board or the audio chip and circuit. just have to wait until you verify all the items asked of you.

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Re: Galaxy 2517

Post by smoke blower » Friday, 02 June 2017, 16:51 PM

are you around Sonoma

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Re: Galaxy 2517

Post by smoke blower » Friday, 02 June 2017, 17:09 PM

I found spraying freeze spray on the audio chip the issue stopped so I put in a brand new audio chip now I have no sound at all. the radio is transmitting fine good audio and the meter is moving on receive just no sound also noticed the pa doesn't work even tried a external speaker but no sound at all even when I touch the pins on the audio chip no sound at all

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Re: Galaxy 2517

Post by sonoma » Friday, 02 June 2017, 17:14 PM

are you sure the chip you put in there is good. you need to look at the caps right there tied to the audio chip. one of them may be what took the chip out.
after reading your info again its confusing. you say the radio is TX good and good audio out then you say now no audio. do you mean no RX audio or what are you saying here.
what is the voltage on the board also.

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Re: Galaxy 2517

Post by smoke blower » Friday, 02 June 2017, 17:19 PM

Ok I replaced C175 and c 179 and yeah these were new I got from my provider. I thought if the audio chip was bad there would be no audio on transmit or can it be

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Re: Galaxy 2517

Post by smoke blower » Friday, 02 June 2017, 17:22 PM

no audio on receive or pa only. audio I have on transmit only. and I have 14v on the board

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Re: Galaxy 2517

Post by sonoma » Friday, 02 June 2017, 17:57 PM

OK you know your problem is at the audio chip area. have you checked to see if the chip is getting warm, have you verified the insulator is working so it does not short to the case. verify all the caps are soldered good by turning the radio on and rocking the caps to see if all are making good connection. I was talking to my buddy and he gets long winded and hard to get off the phone with him. you can have TX and RX depending on what it bad.
a few years ago he got some bad chips and would not have RX as yours is. make sure you have not slopped some solder and all the legs are where they should be and soldered good.if all is good and the chip is not getting warm you need to verify the chip is good. you may need to put another one in or if you have a old cobra 29 put the chip in it to see if it works. you know where your problem is now you just have to look until you find the problem.

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Re: Galaxy 2517

Post by sonoma » Friday, 02 June 2017, 18:03 PM

I just tried to call you after I left the post but no answer.

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Re: Galaxy 2517

Post by sonoma » Friday, 02 June 2017, 19:40 PM

check the voltages of your chip to ic8 of this chart. not the same board but should be able to use the voltage for your 7222 IC from this chart.

http://www.cbtricks.com/radios/galaxy/d ... _chart.htm

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 13:46 PM

did you have to work again today? I keep checking to see if you ever came back on here. pin one should be towards the front of the radio when you check the voltages. at least from memory it mounts backwards with the writing towards the case. it has been years since I worked on a radio with this chip in it.

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Re: Galaxy 2517

Post by smoke blower » Saturday, 03 June 2017, 17:39 PM

I just sent you a email sonoma

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 17:47 PM

since the power supply is putting out 22 volts you need to disable it and hook up an external supply to see what you still have working. you may have knocked the new chip out you put in the radio also/

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Re: Galaxy 2517

Post by smoke blower » Saturday, 03 June 2017, 17:55 PM

ok I will do that

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Re: Galaxy 2517

Post by smoke blower » Saturday, 03 June 2017, 17:58 PM

ok I did that and no receive so it must have blown the audio chip again I have another one here I can replace it real quick

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 18:00 PM

check the voltage at the legs of the chip with the link I left you yesterday. also before you change a part power the radio down and leave the switch on so all residual power bleeds off the caps just to be safe

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Re: Galaxy 2517

Post by smoke blower » Saturday, 03 June 2017, 18:28 PM

ok pin 1=13.8 2=2.2v 3=0v 4=0v 5=1.10v 6=1.10v 7=2.20v 8= 2.20v 9=2.20v 10=13.8 so it looks like 2, 7,8.9 are wrong

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 18:38 PM

I would go ahead and change it to see what it does. before you do check to see if it is getting warm then compare it when you put the new one in.

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 18:45 PM

I will be off here for a while, I have to take care of my wife.

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Re: Galaxy 2517

Post by smoke blower » Saturday, 03 June 2017, 19:08 PM

ok yeah I got to go to I will get with you later I got to order a new chip the last one I had wasn't the right one and I don't have a radio to get one out of so

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 19:19 PM

you might try the old one since it was still working before you pulled it out.

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Re: Galaxy 2517

Post by smoke blower » Saturday, 03 June 2017, 19:27 PM

Ok Sonoma I will and thanks for your help I will put the other back in tomorrow sometime and let you know

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 19:31 PM

you will need to fix the power supply also. you might look at putting a switching power supply in it.do not know what size you need but it should not cost much to put one in it if the trans inside the power supply is bad you might get by with that.

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Re: Galaxy 2517

Post by sonoma » Saturday, 03 June 2017, 19:38 PM

here is a trans failure for the power supply.

http://www.cbtricks.com/cgi-bin/databas ... s=1&key=97

hjere is a little more info, go to cbtricks and look at the symptoms and cures section.
http://www.cbtricks.com/cgi-bin/databas ... s=1&key=82

http://www.galaxyradios.com/regulator.html

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Re: Galaxy 2517

Post by smoke blower » Sunday, 04 June 2017, 14:13 PM

Hey Sonoma I had a chance to put the old audio chip in and it is recieving​ but it is real low the TALKBACK and Pa doesn't work.I took the voltages on the audio chip.
1=13.4v. 2=7.38v. 3=ov 4= 0v 5= 1.21v 6=1.21 v 7=0v 8= 0v 9= 6.90v 10= 14.30v

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Re: Galaxy 2517

Post by smoke blower » Sunday, 04 June 2017, 14:19 PM

The voltages are close but not exactly what they should be on pin-1 and pin-2. I don't have anymore time to work on it today but I wanted to let you know what I have now.

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Re: Galaxy 2517

Post by sonoma » Sunday, 04 June 2017, 15:24 PM

well since you have low audio now on the radio on RX. pin 10 and pin 9 are the feed to the speaker out put. i would say the chip is bad and you need a good 7222 and change c175 again to make sure it did not take a dump since you had 22 volts in it.c175 is a 10 volt which you need to make sure you change those out . one other cap and I will have to check the schematic for it. C179 is a 330uf cap so change it also since it feeds the speaker. you might even try a c179 before you change the 7222 out just to see what it does. you can look close at the power supply info I sent you and order parts for it. the trans more than likely went out in the power supply area and you are getting the full 22 volts off the transformer.

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Re: Galaxy 2517

Post by sonoma » Sunday, 04 June 2017, 15:43 PM

make sure you do not power up the supply on the radio until you get the power supply fixed.. 22 volts is a killer.

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