Texas Star Sweet Sixteen

[66gto#2]

Just purchased a Texas Star Nice looking very clean Sweet Sixteen DX1600. Couldn't pass it up for the price i paid. When i opened it up to my surprise Has one item installed that I never Heard of, Bipolar Transistors=(RFP2879 17-3Q) If i needed a replacement. What could I Install in place of this item.??? I went to RF Parts and they don't list Them. Would a Pair of HG 2879 work? Any input would be appreciated.

 

[Ranch55]

The RFP2879 transistors ARE actually HG2879 transistors.
RF Parts had HG rebrand a LOT for them a few years back.
There can be some slight differences between LOT numbers.

 

[66gto#2]

Thanks for the input that's great for me to hear.

 

[Quiksilver]

Post pics of that bad boy!

 

[66gto#2]

I just did power wire upgrades to the amp and Inside 4 chokes I wound from Power Strip which i installed, to the back of all 4 output transformers. I also Added 3 120MM fans for cooling. I will take pictures and post it.

 

[nomadradio]

Just make sure the fans blow onto the heat sink fins. That's where the heat is at.

73

 

[AudioShockwav]

Just make sure the fans blow onto the heat sink fins. That's where the heat is at.

73

I see amps with fans on the lid for sale on different groups and nothing to cool the heatsink often.....
It's mind boggling

73
Jeff

 

[66gto#2]

I do both top& bottom, Bottom is most important for sure Heatsink .But the top has heat from the 5 Watt wire wound resistor associated with the bios. Here are the pictures.I have a problem How do i add pictures to my posts????

 

[doffo]

I do both top& bottom, Bottom is most important for sure Heatsink .But the top has heat from the 5 Watt wire wound resistor associated with the bios. Here are the pictures.I have a problem How do i add pictures to my posts????

Clicking the picture icon, then you can choose which file or just drag/drop the picture. It will include it in your post.

 

[AudioShockwav]

Or use the " paperclip " Icon labeled Attach files

73
Jeff

 

[66gto#2]

Heres the pictures of sweet16

 

[Ranch55]

Not bad at all.....
I would suggest a solid solder line buildup between each + voltage wire connection on the boards to the transformer voltage input wire.....
That short piece of printed circuit board is still current limiting......
Looks good....
Here is what I am referring to: