PopPulse T-amp with Remote - modding

[ChuckT]

Originally posted by RaZmaTaZ
Dealer,

Did you manage to get the caps from Farnell? I'm having problems getting the right specs. I thought I found it last week but now I only see mkt 1822 with 2.2uf/63v or 10uf/100v. Can't seem to find them on RS as well, they too have 2.2uf or 10uf. But RS has the 3.3uf in 250v

ChuckT, will the 10uf/100v be ok? Or the 3.3uf 250v?

Anything over 50V is fine, but since size is limited, get the smallest one that fits, and higher voltage will be bigger and more expensive.

You can try the MKT1820 too, they have 3.3uf/100v, similar to 1822 but with better temperature characteristics.

I just use the 2.2uf/63V, should be good enough unless your speaker can really go below 20hz.

[TheDealer]

Originally posted by RaZmaTaZ
Dealer,

Did you manage to get the caps from Farnell? I'm having problems getting the right specs. I thought I found it last week but now I only see mkt 1822 with 2.2uf/63v or 10uf/100v. Can't seem to find them on RS as well, they too have 2.2uf or 10uf. But RS has the 3.3uf in 250v

ChuckT, will the 10uf/100v be ok? Or the 3.3uf 250v?

Hi Raz, sadly didnt do it till now but I see, that ChuckT responded...

Originally posted by ChuckT


Anything over 50V is fine, but since size is limited, get the smallest one that fits, and higher voltage will be bigger and more expensive.

You can try the MKT1820 too, they have 3.3uf/100v, similar to 1822 but with better temperature characteristics.

I just use the 2.2uf/63V, should be good enough unless your speaker can really go below 20hz.

Thanks much, you are the expert. I hope to get the parts soon and make first successful steps

[RaZmaTaZ]

ChuckT/Dealer

Thanks for the response and I have ordered the 2.2uf/63V from Farnell along with the Rubycon ZL. And yesterday I went shopping at our electronics market in town. Got myself all the PCB soldering/desoldering and cleaning stuff.

Meantime I'm getting some R&R in Perth and hopefully all the stuff will come in by the time I get back next week.

I will keep you guys posted on the outcome of my first PCB mod.

[TheDealer]

Originally posted by RaZmaTaZ
ChuckT/Dealer

Thanks for the response and I have ordered the 2.2uf/63V from Farnell along with the Rubycon ZL. And yesterday I went shopping at our electronics market in town. Got myself all the PCB soldering/desoldering and cleaning stuff.

Meantime I'm getting some R&R in Perth and hopefully all the stuff will come in by the time I get back next week.

I will keep you guys posted on the outcome of my first PCB mod.

Looking forward hopefully to your success. I am very inquisitive ...

[ChuckT]

Originally posted by RaZmaTaZ
ChuckT/Dealer

Thanks for the response and I have ordered the 2.2uf/63V from Farnell along with the Rubycon ZL. And yesterday I went shopping at our electronics market in town. Got myself all the PCB soldering/desoldering and cleaning stuff.

Meantime I'm getting some R&R in Perth and hopefully all the stuff will come in by the time I get back next week.

I will keep you guys posted on the outcome of my first PCB mod.

I am like u 10yrs ago, knew nothing of electronics.

Now there is so much info on the web. Check out the video below 1st. Practice on old boards 1st, like those throw away sound/video cards.

http://www.solder.net/technical/tips.asp
http://www.elexp.com/t_solder.htm

Enjoy!

[TheDealer]

Originally posted by ChuckT


I am like u 10yrs ago, knew nothing of electronics.

Now there is so much info on the web. Check out the video below 1st. Practice on old boards 1st, like those throw away sound/video cards.

http://www.solder.net/technical/tips.asp
http://www.elexp.com/t_solder.htm

Enjoy!

Thanks chuck for the links. You are right. You dont need to visit any
academy. Nearly all infos on www...

[RaZmaTaZ]

Thanks for the links ChuckT. I viewed some at www.tangentsoft.net too. Finally got to try the Hakko 936 using some old add on card (on your advice.) Tore a leg off one of the caps when I tried the second time.

Not easy as the video showed. Anyway, I set the temp to 700F (and sometimes 400c) as I read from the net. Is this ok? De soldering the first cap was easier but the holes were kinda small, one of the legs on the second cap got stuck and that's how I broke it.

Soldering back the caps was another issue but I think it was because I did not clean/tin the legs on the cap. There were lots of oxidation on the legs.

Farnell has the MKT on back order but sent the Rubycon ZL already. Should have order extra in case I mess up. Will attempt to change the input caps once they arrive.

[RaZmaTaZ]

Ok the MKTs have arrived. But they look kinda big to be able to replace those existing caps (see blur pix). Their legs measure 15mm and the legs are not as leggy as the normal aluminum caps.

Looks like I be bending legs again... Aarrgh!

[Pano]

Cool thread, nice work guys!

I was hoping to have one of these amps to mod weeks ago, but my buddies at Audiomagus can't keep them on the shelf! They go out as fast as they come in. I have actually held one in my hands, but I didn't get to keep it.

Hope to have one soon to play with. I'll be keeping an eye on what you guys are doing until then.

Happy modding!

[ChuckT]

Originally posted by RaZmaTaZ
Ok the MKTs have arrived. But they look kinda big to be able to replace those existing caps (see blur pix). Their legs measure 15mm and the legs are not as leggy as the normal aluminum caps.

Looks like I be bending legs again... Aarrgh!

Easy on the leg, bend them slowly.

Solder a bit of wire in one or both cap hole for extension and you can then solder directly on the wire.
The Poppulse board is not of high quality so be careful or you'll pull out those copper trace.