Ppi a200

mike49504 · 19th March 2010, 02:43 AM

I got this amp and when i opened it up i saw someone has worked on it before.

What is in it now are irfz44's (power supply fets) and 47 ohm gate resistors which are not orginal.

Wondering will this work or should i put 100 gate resistors in it? I dont know what the orignals were im going off the a600 on what the gate resistors are in that

Perry Babin · 19th March 2010, 02:48 AM

The z44s and the 47 ohm resistors should be OK.

mike49504 · 19th March 2010, 03:06 AM

Ok the BDT81's And BDT82's are shorted Is there a good replacement for them?

1moreamp · 19th March 2010, 03:29 AM

Quote:

Originally Posted by mike49504

Ok the BDT81's And BDT82's are shorted Is there a good replacement for them?

2N6488 and 2N6491 which is what PPI used in many models like this one...

mike49504 · 19th March 2010, 03:36 AM

Thanks Perry And 1MOREAMP,

Ill put new ones in and test some other things and let you know how it goes.

I bought this amp along with some others from a guy who needed money i spent $100.00 for the following amps which i think i got a steal.

1: PPI A600

2:PPI A200

3:JL audio 500/1

4: Kenwood 723

5:Yamaha Ypa 320

6:Soundstream reference 700

7:A/D/S PQ 20

Wondering is the yamaha a good amp?? its an older 2 channel

mike49504 · 21st March 2010, 01:47 AM

Are just the ones circled outputs or are the ones with arrows pointing to them the outputs also??

mike49504 · 21st March 2010, 01:59 AM

Ok im stupid i anwserd my own question i looked more closely the ones on the top of the pic all 8 are the outputs

Perry Babin · 21st March 2010, 03:37 AM

Check the emitter resistors carefully. Some appear to be discolored. If they are, that means they ran hotter than they should have and could be out of tolerance.

spooney · 21st March 2010, 04:41 AM

Quote:

Originally Posted by mike49504

Thanks Perry And 1MOREAMP,

Ill put new ones in and test some other things and let you know how it goes.

I bought this amp along with some others from a guy who needed money i spent $100.00 for the following amps which i think i got a steal.

1: PPI A600

2:PPI A200

3:JL audio 500/1

4: Kenwood 723

5:Yamaha Ypa 320

6:Soundstream reference 700

7:A/D/S PQ 20

Wondering is the yamaha a good amp?? its an older 2 channel

I'd say you got a hell of a deal. Care to sell any of them? I've had a dream of owning a PPI A600 since high school

19th March 2010, 02:43 AM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Ppi a200 I got this amp and when i opened it up i saw someone has worked on it before. What is in it now are irfz44's (power supply fets) and 47 ohm gate resistors which are not orginal. Wondering will this work or should i put 100 gate resistors in it? I dont know what the orignals were im going off the a600 on what the gate resistors are in that

19th March 2010, 02:48 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The z44s and the 47 ohm resistors should be OK. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

21st March 2010, 03:37 AM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Check the emitter resistors carefully. Some appear to be discolored. If they are, that means they ran hotter than they should have and could be out of tolerance. __________________ 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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19th March 2010, 03:06 AM	#3
mike49504 diyAudio Member Join Date: Sep 2006	Ok the BDT81's And BDT82's are shorted Is there a good replacement for them?

19th March 2010, 03:36 AM	#5
mike49504 diyAudio Member Join Date: Sep 2006	Thanks Perry And 1MOREAMP, Ill put new ones in and test some other things and let you know how it goes. I bought this amp along with some others from a guy who needed money i spent $100.00 for the following amps which i think i got a steal. 1: PPI A600 2:PPI A200 3:JL audio 500/1 4: Kenwood 723 5:Yamaha Ypa 320 6:Soundstream reference 700 7:A/D/S PQ 20 Wondering is the yamaha a good amp?? its an older 2 channel

21st March 2010, 01:59 AM	#7
mike49504 diyAudio Member Join Date: Sep 2006	Ok im stupid i anwserd my own question i looked more closely the ones on the top of the pic all 8 are the outputs

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