OK.. so I dropped my saber3 for for ten billionth time.....
WELL........
first.. the MON/PTT wouldnt work....
so I took it apart.... thinking the flex was damaged, no apparent damage....
put it back together
MON/PTT still doesnt work.. BUT.. spkr/mic works....
NOW...
here's the funny part....
when the volume knob is in the "on, but no volume" position, it TX's, when the volume knob is between 20-30%, it's acting like the MON button, so between those ranges,it's totally unsquelched audio, above about 30%, it closes squelch... if I press down hard on the volume knob, it keys up as well..
SO... I swapped out the pot/encoder/flex/side buttons/etc from another radio I had......
NOW......
I can enter my unlock code... to unlock the radio.. I hear KP tones,etc when entering the code, but as soon as I hit "enter" to accept the code, it just sits there, saying "LOCKED" ,and does not respond to any keys...
if I enter the WRONG unlock code, it "bonks" at me when I hit the enter key, just like normal.....
before,it was operable,but with the aforementioned issues, now i cant get past the unlock screen....
all Anti-static methods were observed....
IDEAS?!?HELP!?!?! ANYONE!?!
Saber 3 problem....
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apco25
- Posts: 2685
- Joined: Tue Oct 30, 2001 4:00 pm
- What radios do you own?: APX / Astro 25 / Harris
or you cracked the main board probably around the control top as evidenced by pushing on the vol knob, loose module, cracked elsewhere causing intermitannt contact.
Rather unusual for that to happen to a saber unless you dropped it from several hundred feet off a tower. Even then they still survive.
Rather unusual for that to happen to a saber unless you dropped it from several hundred feet off a tower. Even then they still survive.
"Some men just don't know their limitations"
Reseat the flex cables on the DTMF membrane and the flex directly under the controls, one or more is not seated fully into their sockets.
The keypad flex that seats next to the ref. oscillator is also one that loves to unseat itself from time to time.
Check the popples for the PTT and MON. controls as well, sometimes the adhesive moves and also moves the silver dome popples along with it, shorting to ground and causing the squelch to open.
Also check the Vol. control fro shorted connections, especially if the radio dropped on the controls and bent the ribbon flex thay are connected to.
Reseat ALL modules in the radio, as well as the reference oscillator, it's only retained by the rubber cap and the display flex, the pins are short and there should be a small black rubber pad on the bottom of the oscillator as well, this forces the pins to be even that much farther out of their sockets.
Your reference oscillator may also be defective now....chek it with a freq. counter.
They are not well protected against constant shock and abuse, they crystal inside usually delaminates from the holder and the module fails.
I seriously doubt there is a problem with any of the surface mount devices, they have very low mass and are soldered to those boards with more solder than the devices weigh.
This simply osunds like a flex cable reseat and maybe a ref oscillator sawp out at the most.
Enterprise.....One to beam up!
The keypad flex that seats next to the ref. oscillator is also one that loves to unseat itself from time to time.
Check the popples for the PTT and MON. controls as well, sometimes the adhesive moves and also moves the silver dome popples along with it, shorting to ground and causing the squelch to open.
Also check the Vol. control fro shorted connections, especially if the radio dropped on the controls and bent the ribbon flex thay are connected to.
Reseat ALL modules in the radio, as well as the reference oscillator, it's only retained by the rubber cap and the display flex, the pins are short and there should be a small black rubber pad on the bottom of the oscillator as well, this forces the pins to be even that much farther out of their sockets.
Your reference oscillator may also be defective now....chek it with a freq. counter.
They are not well protected against constant shock and abuse, they crystal inside usually delaminates from the holder and the module fails.
I seriously doubt there is a problem with any of the surface mount devices, they have very low mass and are soldered to those boards with more solder than the devices weigh.
This simply osunds like a flex cable reseat and maybe a ref oscillator sawp out at the most.
Enterprise.....One to beam up!
Since he has swapped the flex from another radio, it's not a reseating issue. Since he is "locked out" you can't blame the ref. oscillator, it only controls the VCO for frequency accuracy. This is definately a processor issue that I have seen many times (going by the symptoms that he says he has) at the depot. About 40% of them are resolved by reheating the processor. Unfortunately the other 60% required board replacement.AEC wrote:
I seriously doubt there is a problem with any of the surface mount devices, they have very low mass and are soldered to those boards with more solder than the devices weigh.
This simply osunds like a flex cable reseat and maybe a ref oscillator sawp out at the most.
Dave
DJP126 wrote:Since he has swapped the flex from another radio, it's not a reseating issue. Since he is "locked out" you can't blame the ref. oscillator, it only controls the VCO for frequency accuracy. This is definately a processor issue that I have seen many times (going by the symptoms that he says he has) at the depot. About 40% of them are resolved by reheating the processor. Unfortunately the other 60% required board replacement.AEC wrote:
I seriously doubt there is a problem with any of the surface mount devices, they have very low mass and are soldered to those boards with more solder than the devices weigh.
This simply osunds like a flex cable reseat and maybe a ref oscillator sawp out at the most.
are you talking about the proc on the main board, or the display board? (COPE or CORE?)