Mojotone kits ?

[maxkracht]

The version I had with a color display was very slow compared to the cheaper lcd versions, but I haven't tried the model Martin linked. (I'm too impatient for that extra 2-3 seconds per test...) https://www.amazon.com/Mega328-Digital ... 671&sr=1-8 This one is cheaper and will do most of what the other one does, just no zeners or ir decoding. They are all reasonably accurate, I have a better LCR meter and a better transistor tester but usually reach for this one. I once went down the rabbit hole of trying to differentiate the model types and which use knockof chipsets. If i remember correctly, you want the ones with a crystal oscillator. The ones without a crystal are more likely to drift, but it's possible that this is outdated information.

[hebaton]

About the quality of the work, here are a couple pics.

Some solder points look OK, but many are ugly, and might be poor electrical connections. I'd go through and retouch.

You mean , heat all to melting point ?
This may be a dumb question to most of you guys, but what temperature would you set your iron to, to work on this ?

[martin manning]

I personally use 700F/370C for Pb-Sn solder. Aaron is suggesting that you re-flow any joints that look like they have not been fully melted in and/or do not have a smooth and shiny appearance like the one below.

[hebaton]

Thank you !

I will go through it. For some reason, this unit ( I have played JTM45s in the past ) seems very "stiff" I like tube rectified amps because of the chewy response the usually have, due to sag.
This unit feels very stiff, I wonder why that would be and what, if anything, I can do to change that ?

[xtian]

This unit feels very stiff, I wonder why that would be and what, if anything, I can do to change that ?

What's the value of the first ("reservoir") fitler cap?

[hebaton]

The info is not visible the way they are installed. Can they be measured in circuit ?

[hebaton]

This unit feels very stiff, I wonder why that would be and what, if anything, I can do to change that ?

What's the value of the first ("reservoir") fitler cap?

I pulled them out, they are both 32+32uf cans. That is not what is expected, in a original JTM45 you would find a 16+16...