PCB Number: EPT695014B
PLL Number:
Test gear available:
Symptoms: Just bought this radio off Ebay - guy said it was working 24-32. When i switched it on, only 24 and 28. then i found the mod by tapping MAN on the front. All good.
Then halfway through a chat with someone on FM, the radio defaulted back to 24-28 and the MAN button would do absolutely nothing.
I removed the cover and unplugged the e-chip. turned it on, then back off again, then reconnected the e-chip. Turned it back on - perfect.
Then during a chat, 'beep' and the thing goes back to ham mode, and the man button wont do anything. Took the lid off again, unplugged and re-plugged the chip - working - but only until i turned the channel change, then it plopped back onto 24.890. 
I actually put my finger on the tiny pcb whilst turning on the rig and this cures the problem, but as soon as i take my finger off of it, it defaults again. Dry joint?
What is working: The rig is in perfect order, all modes and contriols work, apart from the MAN button to change from Ham to CB mode.
What has been tried: removal and refitting of e chip
Did it suddenly happen ?: yes
Anything else that may be of help?: i am beginning to think that the E chip may be faulty - or an smd is not making proper contact - i dont dare wave my soldering irion at it, ill just make things worse.
Any suggestions? Can anyone tell me where i can buy another e chip?
73's
Jim
