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Thanks Brad. Dummy load and just radio meter on my cherokee 1000.

Yes I understand, but which internal adjustment on a Cherokee 1000 is used to achieve that?

Hi Nomad. Does that mean that the mosfets need replacing in a newer amp such as a RM Italy?

Hi to all. When I check the dead key on my radios I notice that they all go up a little and then settle down.Is that normal? When they settle down is that the actual dead key. For instance one radio may go up to about 4 watts and then quickly settle back to 2 watts. Thank you for your help...

Hi to all. Can someone tell me how to adjust the dead key on a Cherokee 1000? Which internal adjustment is used and how low can it be set? Thank you for your help Chuck Saylor

What components can be damaged in an Italy mosfet amplifer by ALC overshoot? How can you test or determine which components are damaged? Thanks for any help here. Everyone on this forum has been extremely helpful to me. You are great radio people to have for help and giving advice.

Thank you Sir. You are a fountain of information!

As always Thanks very much! Do you know which components are through hole?

Hi again. Couple of questions again also. Are the fake toshibas so bad because they do not work at all or they just do not last very long? Are the caps, resistors and diodes all surface mount in the texas stars. No through hole connections at all? Thanks and have a good day sir!

Thanks for the great information on the transistors. Do the fake toshiba transistors not last long or just do not work at all? Also are the resistors, capacitors etc all surface mount in the texas star dx 500? Thanks to all for the great help you provide.

I live in Vancouver Wa. There no longer any radio shops or technicians around this area to address repairs.

Thank you for all your help. It looks like it will need to sit on a shelf for parts.

Toshibas. So the best thing to do is replace the resistors and put in 4 new matching transistors?

The 2 resistors at front of the amp in red circles, R18 and R19 I believe are slightly burnt on one end each. It would be much quicker and easier to replace these two and see what happens before replacing all the power transistors. What do you think about trying this first. They would still...

Thank you.

Looking again they are located exactly where R18 and R19 are so that must be them, even though the bands are not exactly the same mine have burnt ends. I will see what I can find to replace these if you think they are the problem? I have trouble getting to my station out in the shop so I should...

Your diagram does not show the same band colors, but they are aprox. where R8 and R9 are in your diagram. They are smaller then R18 and R19, more the size of R8 and R9.

None look dark.All 4 look nice and clean.Thanks.

I am an old disabled guy without a smart phone, so I am unable to post pictures. The power transistors look great for what it is worth. Upon very close examination of this amp there are two resistors close behind the controls that appear to be burnt on the ends. They are blue with gold bands on...

If amp keys up but will not work, are the power transistors bad?