Anytone at5555N II

[bozzy]

Just to add, found the fault. The TIP36C transistor had failed, new one in and now TX is working again, just need to work out how to Bias the 3 new mosfets.

[Edd200sx]

As I mentioned

https://cbtricks.org/radios/stryker/sr_ ... gnment.pdf

If any doubt 3.6/3.8 volt gate will get it going

[bozzy]

Thanks, again this 7900 doesn't have short-circuit jumpers to remove, there are ferrite beads I could un-solder and again, only 2 stages in the output to adjust, not 3 (the 7900 has 3 mosfets, not 4 like other radio's so no W7).

But the 3.6/3.8 volts you mention is useful.

Thanks.

[Edd200sx]

Thanks, again this 7900 doesn't have short-circuit jumpers to remove, there are ferrite beads I could un-solder and again, only 2 stages in the output to adjust, not 3 (the 7900 has 3 mosfets, not 4 like other radio's so no W7).

But the 3.6/3.8 volts you mention is useful.

Thanks.

Ok bud no probs. That voltage will be about ok long as the ssb
Tx audio is ok

[bozzy]

Think I am sorted now, found the fault which was the TIP36C was knackered, also found the Lincoln 2 service manual is pretty much correct for the 7900, it states to unsolder 2 ferrite beads for the bias adjustment as I guessed.