| Author |
Message |
    
Honkytonkman593
Intermediate Member
Username: Honkytonkman593
Post Number: 168
Registered: 12-2001
| | Posted on Thursday, July 28, 2005 - 7:17 pm: | 
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ok here we go it shows recieve on the meter...but no sound out of any external speakers i use. yes they all work but not on this radio.. and yes it is on cb not pa. and yes the rf gain is all the ways up and yes i have 2 mikes that are for the radio . the radio tx very good good audio out but nothing on rx. i even tried the screwdriver trick touching the switch wire to the key wire.
NOW HERES WHERE IT IS EVEN MORE INTERESTING.
if i plug a set of earphones into the aux adapter i can hear my self talking from my other radio very quietly but at least i can hear something.
i changed the ta7222ap audio transiter. no luck but tx audio is even better....still no recieve.
this 2000 is mint otherwise...really want to fix it. thank you honkytonkman593
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Viking
Intermediate Member
Username: Viking
Post Number: 215
Registered: 2-2002
| | Posted on Thursday, July 28, 2005 - 8:15 pm: |
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Can you get the PA to work? The audio goes through the PA swtich, headphone jack and the speaker switch before getting to the speaker. Check these.
Also check caps. They tend to go bad. Check C175. |
Honkytonkman593
Intermediate Member
Username: Honkytonkman593
Post Number: 169
Registered: 12-2001
| | Posted on Friday, July 29, 2005 - 8:09 am: |
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nothing to speak of thru the pa either. i will replace c175 just in case and ill check the others.thanks for a start. |
Kid_vicious
Intermediate Member
Username: Kid_vicious
Post Number: 490
Registered: 9-2004
| | Posted on Thursday, August 11, 2005 - 6:02 pm: |
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honkytonkman593, vikings suggestion is spot on.
there are a bunch of electrolytic caps in that radio that are rated at 10 volts. i recommend replacing all of them with 16 volt caps.
one of these 10 volt caps (cant remember which) will kill all receive audio if it goes. the conditions you describe are the exact symptoms of this cap going bad.
there is a yahoo group especially for 2000gtl owners. join the group. they have schematics, owners manual, and service manual in their files section. check it out!!! |
Semi
New member
Username: Semi
Post Number: 5
Registered: 7-2005
| | Posted on Thursday, August 11, 2005 - 11:22 pm: |
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To me it just sounds like rf amp transistor that we all replace with 2999 is bad. Off hand I can't remember tr. #. Try that if you haven't already.
Semi |
Kid_vicious
Advanced Member
Username: Kid_vicious
Post Number: 500
Registered: 9-2004
| | Posted on Saturday, August 13, 2005 - 9:02 pm: |
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semi, its TR14 and thats a good idea! |
Semi
New member
Username: Semi
Post Number: 6
Registered: 7-2005
| | Posted on Sunday, August 14, 2005 - 12:06 am: |
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Kid thanks for remembering the #
Sounds like what's happening.
Semi |
Al_lafon
Member
Username: Al_lafon
Post Number: 84
Registered: 3-2005
| | Posted on Sunday, September 11, 2005 - 4:04 pm: |
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Hello just to be sure lift one wire on each
speaker jack at a time with headphones as
i have seen the jacks short out. I think
you have 2 speaker jacks and a pa as for the
rf amp transistor i don't think thats it you'll
not see your rf meter move if thats out. If you
want the sams its CB-251 with this in hand you'll
find out what jack it comes in on frist. |
