need to know how to take a part a motorola gp340

[blackpoolguy1971]

can any one help me i have a radio that will not power up when i turn it on the battery is fine and charged ? if i can get in to the radio i maybe able to see whats wrong but not sure how to take it a part with out damage to the housing or parts inside

[Andreas]

Remove the battery and switch the radio off.Put the battery on the radio and switch the radio on.If the LED flash one time,the firmware/codeplug is bad.

Andreas

[motoroladealeruk]

Remove antenna, vol knob and ch knobs.
If you have a £3.00 knob/chassis tool it's easy. If not just try and pull the knobs off or gently prise them off the shaft.
Lie the radio down on it's front.
Remove battery.
Look at the area near the bottom of the radio, where the chassis plate ends and the plastic begins (At the end where the 3x battery locating holes are / the end the radio would stand up on if you were stand it upright)
Insert a small flat headed screwdriver in between the plastic and the chassis and gently prise the chassis plate up and out. As it comes pull it back and out with a little downward movement to slide it out so to speak.
Now, VERY CAREFULLY flick and release the flexi-track socket latch. This will free the board from the housinf fascia.
If it's not turning on try soldering the volume pot pins (5 or 6 of them) as these usually have hardly any solder on the pads at all. (motorola cut-backs!)
Secondly, remove the 4x torx screws to release the pcb from the chassis plate.
Turn the pcb over and look near the battery terminal block. There should be a small glass vile that could do with more solder, and next to that (usually above it and left of the battery contact block is a couple of very small SMD (surface mount devices). One of these componants is a fuse (yes it is tiny! and the even smaller one next to it also causes problems.
Try touching them up with solder first. Also try using a voltmeter and do a continuity test through the componants to see if they are making contact still and not open circuit.
If it's an early 1998/99 model use lead solder.
If it's newer, and especially if the PCB is blue colour and not green then use lead free.
If you mix the solder up you'll get bubbled joints, dry joints, and basically an unitdy board.

If you are not confident with electronics don't attempt this.
These radios have very small componants and unless you know your uF's from your ohms then there is very little a non technical person can do inside.

I did pm you a few days back, and offer still stands. If you want me to put it right or even if you just need spares to do it yourself i'm more than willing to help you.

Good luck.