Jim's Audio F5 power supply board

Hikari1 · 11th March 2013, 04:47 AM

Well, the diyaudio store is out of power supply boards for my F5 build. An ebay search led me to this...Jim's audio power supply board.

Seems like it's good quality...but I don't see any snubber capacitors? Big deal, yes or no? Also, the pads marked "HL"? Thermistor? lastly, the 2k2 resistors...I assume those are bleeders?

Man, all I need is a case (out of stock) and a PS board (out of stock) from the diyudio store and I could finish up my F5. Should I wait or should I risk using this PS PCB?

Lastly, I emailed Jim's audio. They "claim" to have Fairchild FQA19N20/FQA12P20 mosfets. I bought a pair of each. They are on thier way from Hong Kong now. I have no idea if they are fakes or not. Any ideas how to tell?

oneplustwo · 11th March 2013, 05:50 AM

I was in your situation and used this board for my F5. No probs. Nice quality board. Some have had issues with the star grounding scheme, but IIRC, it was just a simple matter of connecting some of the ground pads together. I didn't have real issues myself but connected those point anyway.

jimbo51 · 11th March 2013, 05:51 AM

Must be good quality ...... says FIRST WATT on it!

Better to be patient and support the good guys.

omishra · 11th March 2013, 06:47 AM

Quote:

Originally Posted by jimbo51

Must be good quality ...... says FIRST WATT on it!

Better to be patient and support the good guys.

I am sorry but I read "FTRST WATT"

AudioSan · 11th March 2013, 06:48 AM

you can also use the aleph PSU Boards from chipamp.com. they support 6x 40mm caps, CRC/CLC, bleader resistors and bypass caps.

jimbo51 · 11th March 2013, 01:15 PM

Quote:

Originally Posted by omishra

I am sorry but I read "FTRST WATT"

What us down-under folk would call being a "smart ar5e", he knows what he wants to imply but trying to keep safe legally.

sachu888 · 11th March 2013, 02:01 PM

Quote:

Originally Posted by omishra

I am sorry but I read "FTRST WATT"

Good catch Om.

Regards,
Sachin

Hikari1 · 11th March 2013, 04:39 PM

Jim's audio also has this board. Anyone care to comment?

Heavy Duty Power Supply Partial Kit Pass Amplifiers | eBay

Onboard rectifiers. I am not really an expert on rectifiers...are these worse than the block type rectifiers? I would replace the resistors. Also, would a f5 build require two of these boards? I only see one set of secondary in/out.

Audiosan: I looked at chipamp.com but could only find images of a PS board that uses 2 caps....

mdynac · 11th March 2013, 04:51 PM

Quote:

Originally Posted by Hikari1

Audiosan: I looked at chipamp.com but could only find images of a PS board that uses 2 caps....

go to the ORDERS page and scroll to the bottom listing, you will find the aleph power supply which will work for your F5 also.

AudioSan · 11th March 2013, 05:08 PM

her is a pic of the boards.

11th March 2013, 05:50 AM	#2
oneplustwo 1.21 Gigawatts?! diyAudio Member Join Date: Apr 2009 Location: San Francisco	I was in your situation and used this board for my F5. No probs. Nice quality board. Some have had issues with the star grounding scheme, but IIRC, it was just a simple matter of connecting some of the ground pads together. I didn't have real issues myself but connected those point anyway. __________________ My Projects

11th March 2013, 06:48 AM	#5
AudioSan diyAudio Member Join Date: Feb 2009 Location: Trondheim	you can also use the aleph PSU Boards from chipamp.com. they support 6x 40mm caps, CRC/CLC, bleader resistors and bypass caps. __________________ aleph P1.7 pre. F5 power amp. CDpro2(need DAC). Vivaldi8 speakers

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11th March 2013, 05:51 AM	#3
jimbo51 diyAudio Member Join Date: Nov 2007 Location: Melbourne	Must be good quality ...... says FIRST WATT on it! Better to be patient and support the good guys.

11th March 2013, 04:39 PM	#8
Hikari1 diyAudio Member Join Date: Jun 2012 Location: Seattle	Jim's audio also has this board. Anyone care to comment? Heavy Duty Power Supply Partial Kit Pass Amplifiers \| eBay Onboard rectifiers. I am not really an expert on rectifiers...are these worse than the block type rectifiers? I would replace the resistors. Also, would a f5 build require two of these boards? I only see one set of secondary in/out. Audiosan: I looked at chipamp.com but could only find images of a PS board that uses 2 caps....