COBRA 25 GTL (WHITE NOISE OR STATIC ? )

It's basically a Cobra 25 GTL vintage , got the radio and it was a virgin , The problem is this , when you turn it on (just on with no volume) there's a static white noise if you will that will come out both ex.speak or internal speak) ? when you add volume the receive is fine but that white noise static is still there ? the noise shows nothing on the S meter at all. You can squelch it out , (but that also takes out the receive as squelchs do) using the rf gain all the way down and the static is still there. Using the PA , the static is there also ? will go away once you key and apply audio , but is there after you unkey. The same static that is there when you just turn on the radio without adding in coming volume to it. Any ideas whats going on with this one ? Thanks

Truly a first for me FM296 , other then that , the radio is fine. It's got to be a part that has gone bad ? IM thinking that the white noise is amplified out the speakers and PA , so maybe ? it might be the audio chip because without that we would hear nothing ? but yet it puts out great audio as it should ? I've just never incountered anything like this. I'd care more knowing what the problem was then I would the radio itself. I will eventually change the audio chip for grinnies if need be.

up to this point , I've changed the audio chip and a few other major parts , still no change ? just plug in external speak into pa and switch to pa and see if you still here the noise. Dude ! IM sure I've been through 100 or so radios in my time and this is truly a first for me. Next will more then likely be the on/off switch for me .......pain in the ass ! but IM sure one of those sleepless nights I'll get around to it. This is kind of why I asked where all the techs have good Tex ? I look at it a few ways , they know and they don't want to tell ? or they don't know and it's better to say nothing ? )-: or there just not around. I never knew a tech that didn't have 100 or so parts radios laying around .....you ever wonder why that might be ? Bad cap,resistor or transistor somewhere ? God only knows ? Peace

White noise ? IM still trying to figure out if that's the right terminology for the problem I stated ? Thanks Mr KD for the reply , as well as to Lord's . Such a nice radio with great decent power and audio and this problem from hell !! I mean , it really isn't as bad as I make it sound ,it's just bad enough for me not to pass it on to anybody else !I mean you can turn it up over the noise but I know it's not supposed to be there. I've changed many a cap in this radio and I surely know what your talking about here KD , been there done that ,I surely appreciate your reply. Times like theses a radio can and will become a parts radio and somehow or some way become a asset for something else later. I've also noticed over the years with some of these older radios that the white noise (whatever you want to call it ?) is there , but nothing like this old 25 GTL I was talking about it. I truly understand that caps dry up from age and what not but that also depends on how the radios had been stored over the years ?, I love old cb radios and Lord knows I've been through hundreds of them over the decades past , I don't care if there over 30 years old or not ! they made them well and they were made to last and they have,but I can say this much , there's no better feeling then when I get one of these antiques and they are virgins never touched ! or with some of the more simple fixes as finals and audio chips / voltage regulators and things like that. I've learned over the years , that even the best of tech's have many a parts radio lying around , it was either not fixable or it just wasn't worth the time anymore. IM no tech , IM just a hobbiest with a passion for the good ole CB radios. Welcome to the Forum Mr KD , you should post more often , sounds like you have been there and done that.