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Cobra 2000 I have had 2 of them for a while now and they are just solid top performers. Receive is just familial on the 2000 even better than my ICOM 7300 white noise is almost non existent. So I am able to pull out very distant weak stations. I have many many hrs on my 2000's and they just keep...

checked voltage on the EEPROM today U606 93LC46 pin 2 is at 4.4V but when I shut off the radio that voltage on Pin 2 drops down to 0V

thanks Brandon, still troubleshooting this issue with this 2995 DX. I'm pretty sure the 93LC46 EEPROM is shot. I ordered a few new ones and will get them installed on the pcb soon. I also ordered a used processor pcb so will be giving that a try also. I so need to fix this memory loss problem...

thanks for your help

I have a superstar 3900 with the EPT360011Z board in it.

the link says account blocked can't access it.

wow ok mine sure looks like a 2 thanks for correcting me.

thanks it's close but not it. I have EPT3600112 pcb board.

how do you get the QT40 to go to 24 Mhz. Is there a mod for this?

yeah roger that, I'll get it figured out. Thank you for your time.

thanks I need to do a alignment. It is off frequency a little.

thanks but my pcb layout is different from the one in the link.

thanks but that layout is different from what I have. Towards the front of the radio there are 9 L variable inductors. That layout only shows 7. But thanks anyhow for your time.

PCB EPT360011Z Looked on google for it with no luck. This is a very early version Superstar 3900. I bought it new when I was 18 years old in 1986 Thanks for any help.

still looking for answers, thanks

still having the issue. I changed out the 2 electrolytic caps on the board but that didn't help. Still looking for answers. Thanks.

UPDATE: Problem resolved! Was a bad 1K Dynamike Potentiometer. Replaced and works like new. Bi-color LED red/green red is burnt out and will be replacing the RX/TX LED soon.

yeah a friend helped me track down the problem on the phone. shorted 2 terminals together on the dynamike pot and boom the audio was back. I had a 1K in stock over here so got it replaced the 148 is working like new again. I have never had a Potentiometer go bad on me ever. Now I know. Thanks...

UPDATE...... The Cobra 148 GTL is fixed and the problem was the 1K Dynamike Potentiometer. Put a new one in and bam! We got good loud mic audio. Thanks to everyone that responded with your suggestions.

Thanks nomad, I recapped the whole radio today and re installed TR25 and 26. I will remove TR24 and see what that does. I also have IC4 on order. Will change that out once I get it.