Thanks again to you guys for the help. Replaced the audio amp chip and all is well now except for a weak transmit barefoot.
Thanks again ridgeline and yes, I do have a couple of those and preamp chips so I will replace. I hope the next time I post is to say it's working.
Ok fellas, I apologize for asking the same questions but ....... I replaced C91, 92 and 94. At the chip, I hope that is what it's called because...
Replaced the 33uf cap. Positive does go toward the 9 pin if I'm not mistaken. I turned on with full volume and heard faint static then realized I...
Thanks Ridgeline.
Question, if anyone sees this. As checking voltage at the audio chip IC4 where pin 10 is the output, I accidentally touched 9 and 10 together and...
Took voltage readings on ic4 audio amp and they are super low. From 1v and no higher than 8v. Eg: pin 4 should have 50v coming in but only has 3v....
Big thanks to Night Stalker and Ridgeline. I'll replace those caps first thing.
Yes, DC is wide open and thanks for some education here. I bought the preamp, IC1 and the amp IC4 just in case I do have an old scope so I will...
Hmm ... from what I gather ic-1 is a 7 pin audio amplifier .... the only other is the PLL D858 chip. I dont see a 10 pin chip. I've been looking...
Thanks. Yes, I think it's the chip because I get nothing no matter what I do but there is 5 volts at the first pin and a couple of volts at the rest.
You have been very helpful Night Stalker. Thank you
Thanks again Night Stalker ......... Excuse my ignorance but when you say pin 4 I was touching pin 4 of the mic jack. Did you mean pin 4 of the...
Thanks Night Stalker. Nothing when I touch pin 4, transmit, on the mic jack.
The board is a DELTA EC2 CB ECHO BOARD TURBO I connected the mic in to the #2 pin of mic jack and the mic out to the disconnected wire from pin...
Thanks for your reply. I dont know if it's normal but when I switch to pa, the lights go out but the channel indicator stays on. I plugged in...
I was trying to install an echo board to this 139xlr. When keying mic, it would squeal so I tried a different ground and the audio went out. I...
Let me clarify. The radio was tuned prior to the amp. Swr below one. I am using the watt meter on the swr to see the output which was 2.5 watts...
It's already tuned. I am using the watt meter on the swr.
Thanks to anyone who can help here, I really appreciate it. Using a Spartan 23 channel ssb with a Redco Digi Scan attached that bypasses the...
