Anytone at5555N II
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Re: Anytone at5555N II
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.
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Re: Anytone at5555N II
As I mentioned
https://cbtricks.org/radios/stryker/sr_ ... gnment.pdf
If any doubt 3.6/3.8 volt gate will get it going
https://cbtricks.org/radios/stryker/sr_ ... gnment.pdf
If any doubt 3.6/3.8 volt gate will get it going
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Re: Anytone at5555N II
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.
But the 3.6/3.8 volts you mention is useful.
Thanks.
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- Top Poster
- Posts: 1339
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Re: Anytone at5555N II
Ok bud no probs. That voltage will be about ok long as the ssbbozzy wrote: ↑19 Jan 2024, 23:01 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.
Tx audio is ok
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Re: Anytone at5555N II
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.