wont turn on 2, linear power 4753 iq.

IMPALAMAN1 · 3rd November 2005, 05:23 AM

this is for a linear power 4753 iq. i wanted to keep it separate from the 2.2 thread.. so i did the same readings. only when i touch the +b lead i get a small spark. here are the pwm readings. it is a:

SG3526N chip

pin 1: 4.98 volts
pin 2: 0.002 volts
pin 3: 4.20 volts
pin 4: 4.65 volts
pin 5: 4.98 volts
pin 6: 0.002 volts
pin 7: 0.002 volts
pin 8: 4.95 volts
pin 9: 3.57 volts
pin 10: 1.876 volts
pin 11: 0.002 volts
pin 12: 4.31 volts
pin 13: 4.69 volts
pin 14: 10.78 volts
pin 15: 0.003 volts
pin 16: 4.68 volts
pin 17: 10.78 volts
pin 18: 4.98 volts

it is possible that hte 10.78 volt readings are because the power source i was using was possibly losing power.

thanks guys i appreciate any and all comments.

Perry Babin · 3rd November 2005, 09:10 AM

This supply also looks like it's up and running.

The low voltage is likely due to a low power supply input voltage.

What are the part numbers on the power supply transistors?

Can you email me high res photos of the two amplifiers (2.2 and 4753)?

babin_perry@yahoo.com

IMPALAMAN1 · 3rd November 2005, 02:34 PM

BoomBoomBoy · 3rd November 2005, 03:48 PM

I have a LP 4753IQ, but it runs fine. I'll keep an eye on this thread and see if I can help if you need anything.

IMPALAMAN1 · 3rd November 2005, 03:54 PM

MIGHT YOU HAVE ANY LP STUFF FORSALE?

BoomBoomBoy · 3rd November 2005, 04:12 PM

Quote:

Originally posted by IMPALAMAN1
MIGHT YOU HAVE ANY LP STUFF FORSALE?

No. I currently running an LP 2002 thru an AudioControl 2XS (so I can bridge it) to a JL Audio Microsub 8.2 (2X8" 8W1's), and a LP 4753IQ to a set of JL Audio XR 650 CSi's.

They have some decent Linear Power amps on eBay this week. I bought my 4753IQ off ebay.

IMPALAMAN1 · 3rd November 2005, 04:22 PM

I would like to keep this topic to the amplifier in question can you email me I would love to talk lp with ya.

impalaman1@yahoo.com

IMPALAMAN1 · 4th November 2005, 06:12 AM

ill get the buss bars off and read them over the weekend... ill keep you posted.

3rd November 2005, 05:23 AM	#1
IMPALAMAN1 diyAudio Member Join Date: Jun 2005 Location: BAY AREA, CA.	wont turn on 2, linear power 4753 iq. this is for a linear power 4753 iq. i wanted to keep it separate from the 2.2 thread.. so i did the same readings. only when i touch the +b lead i get a small spark. here are the pwm readings. it is a: SG3526N chip pin 1: 4.98 volts pin 2: 0.002 volts pin 3: 4.20 volts pin 4: 4.65 volts pin 5: 4.98 volts pin 6: 0.002 volts pin 7: 0.002 volts pin 8: 4.95 volts pin 9: 3.57 volts pin 10: 1.876 volts pin 11: 0.002 volts pin 12: 4.31 volts pin 13: 4.69 volts pin 14: 10.78 volts pin 15: 0.003 volts pin 16: 4.68 volts pin 17: 10.78 volts pin 18: 4.98 volts it is possible that hte 10.78 volt readings are because the power source i was using was possibly losing power. thanks guys i appreciate any and all comments. __________________ linear power/ oz audio/ clarion

3rd November 2005, 09:10 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	This supply also looks like it's up and running. The low voltage is likely due to a low power supply input voltage. What are the part numbers on the power supply transistors? Can you email me high res photos of the two amplifiers (2.2 and 4753)? babin_perry@yahoo.com __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

3rd November 2005, 02:34 PM	#3
IMPALAMAN1 diyAudio Member Join Date: Jun 2005 Location: BAY AREA, CA.	ill email pics tonight. __________________ linear power/ oz audio/ clarion

3rd November 2005, 03:54 PM	#5
IMPALAMAN1 diyAudio Member Join Date: Jun 2005 Location: BAY AREA, CA.	THANKS BOOM MIGHT YOU HAVE ANY LP STUFF FORSALE? __________________ linear power/ oz audio/ clarion

3rd November 2005, 04:22 PM	#7
IMPALAMAN1 diyAudio Member Join Date: Jun 2005 Location: BAY AREA, CA.	HIT ME UP ON EMAIL I would like to keep this topic to the amplifier in question can you email me I would love to talk lp with ya. impalaman1@yahoo.com __________________ linear power/ oz audio/ clarion


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

3rd November 2005, 03:48 PM	#4
BoomBoomBoy diyAudio Member Join Date: Oct 2005	I have a LP 4753IQ, but it runs fine. I'll keep an eye on this thread and see if I can help if you need anything.

4th November 2005, 06:12 AM	#8
IMPALAMAN1 diyAudio Member Join Date: Jun 2005 Location: BAY AREA, CA.	cant see em ill get the buss bars off and read them over the weekend... ill keep you posted. __________________ linear power/ oz audio/ clarion

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Yamaha RX-V800 wont turn on	serafis	Solid State	4	28th June 2008 01:16 PM
wont turn on	IMPALAMAN1	Car Audio	17	1st February 2006 03:53 PM
Amp wont power on, just keeps blinking, help!	Mach1Chris	Car Audio	7	4th May 2005 02:49 PM
Multi turn linear pots?	Thatch_Ear	Parts	3	28th May 2002 12:05 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read