SOME PART QUESTIONS

bdgf2004 · 27th November 2010, 02:00 PM

DOES ANYONE KNOW THE VALUE OF THE CAPS ON THE OLD FOSGATE X-OVER CARDS? IT IS SMALL AND DARK RED IN COLOR AND IT SAYS "473". I HAVE A SCHEMATIC BUT IT ONLY SHOWS AN ILLISTRATION OF THE CARD, NO VALUES OR PART NUMBERS.

ALSO WHAT POT SHOULD I BUY TO REPLACE A DAMAGED ONE ON A FOSGATE 160.4 (GRIND ON BLACK STYLE). IT'S THE GAIN POT AND ALSO COULD I GET A KNOB TO GO IN THEM. THERE ARE SO MANY DIFFERENT SHAPES AND SIZES I JUST DON'T KNOW WHERE TO START. IT HAS 3 LEGS, STANDS UPRIGHT AND SAYS "5K 824K".

THANKS FOR ANY ADVISE ON WHERE TO START!

Perry Babin · 27th November 2010, 02:57 PM

473 is a 0.047uF cap.

What's wrong with the potentiometer?

The pot may be a Piher PT6Kh-502 if it's 6mm in diameter. You may be able to get them from Pacparts.com. You'll have to call them. They probably won't use the part number I listed. Have the amp in front of you when you call them. They may need the model, the board number and the circuit board designation. If they're 10mm in diameter, mouser should have them.

bdgf2004 · 27th November 2010, 03:32 PM

SOMEONE HAS GOBBED A BUNCH OF SOLDER ALL OVER THE FRONT OF IT. AND THAT CHANNEL IS BLOWN. SO I FUGIURED THAT ALL THAT SOLDER MAY HAVE HAD SOMETHING TO DO WITH IT. I KEEP THESE OLD AMPS FOR MY OWN COLLECTION AND I WOULD LIKE FOR THEM TO BE FULLY FUNCTIONAL AND ALL THE SOLDER HAS MELTED THE FRONT OF THE POT AND HAS BLOCKED ACCESS TO THE SECOND POT.
THE O.D. OF THE POT IS 10.31MM.

Perry Babin · 27th November 2010, 04:14 PM

531-PT10H-5K

This is the closest I see at mouser. You'd have to make an adjustment tool.

Try Pacparts. They may have the original and the shaft.

bdgf2004 · 29th November 2010, 09:45 PM

im at mouser and i have a bunch of .047uf polyester caps pulled up. what voltage rating should it be at?

bdgf2004 · 29th November 2010, 09:51 PM

also the 2sk366s fully insulated fet. i can't seem to find any around. what would be a good sub or where can i get it.
thanks

Perry Babin · 29th November 2010, 09:57 PM

For the crossover card, you don't need anything above a 50v cap.

What is that 2sk366 in? Are you sure that's the correct part number?

bdgf2004 · 29th November 2010, 10:59 PM

2sk3662. sorry

Perry Babin · 29th November 2010, 11:04 PM

You didn't state how it was being used but the IRFIZ48 should be a suitable replacement.

IRFIZ48GPBF Vishay Semiconductors MOSFET Power

bdgf2004 · 29th November 2010, 11:15 PM

power supply in an alpine

27th November 2010, 02:57 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	473 is a 0.047uF cap. What's wrong with the potentiometer? The pot may be a Piher PT6Kh-502 if it's 6mm in diameter. You may be able to get them from Pacparts.com. You'll have to call them. They probably won't use the part number I listed. Have the amp in front of you when you call them. They may need the model, the board number and the circuit board designation. If they're 10mm in diameter, mouser should have them. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

27th November 2010, 04:14 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	531-PT10H-5K This is the closest I see at mouser. You'd have to make an adjustment tool. Try Pacparts. They may have the original and the shaft. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

29th November 2010, 09:57 PM	#7
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	For the crossover card, you don't need anything above a 50v cap. What is that 2sk366 in? Are you sure that's the correct part number? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

29th November 2010, 11:04 PM	#9
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	You didn't state how it was being used but the IRFIZ48 should be a suitable replacement. IRFIZ48GPBF Vishay Semiconductors MOSFET Power __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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27th November 2010, 03:32 PM	#3
bdgf2004 diyAudio Member Join Date: Oct 2010	SOMEONE HAS GOBBED A BUNCH OF SOLDER ALL OVER THE FRONT OF IT. AND THAT CHANNEL IS BLOWN. SO I FUGIURED THAT ALL THAT SOLDER MAY HAVE HAD SOMETHING TO DO WITH IT. I KEEP THESE OLD AMPS FOR MY OWN COLLECTION AND I WOULD LIKE FOR THEM TO BE FULLY FUNCTIONAL AND ALL THE SOLDER HAS MELTED THE FRONT OF THE POT AND HAS BLOCKED ACCESS TO THE SECOND POT. THE O.D. OF THE POT IS 10.31MM.

29th November 2010, 09:45 PM	#5
bdgf2004 diyAudio Member Join Date: Oct 2010	im at mouser and i have a bunch of .047uf polyester caps pulled up. what voltage rating should it be at?

29th November 2010, 09:51 PM	#6
bdgf2004 diyAudio Member Join Date: Oct 2010	also the 2sk366s fully insulated fet. i can't seem to find any around. what would be a good sub or where can i get it. thanks

29th November 2010, 10:59 PM	#8
bdgf2004 diyAudio Member Join Date: Oct 2010	2sk3662. sorry

29th November 2010, 11:15 PM	#10
bdgf2004 diyAudio Member Join Date: Oct 2010	power supply in an alpine

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