problems with mofset car ampilifier

hicksy_5 · 6th January 2006, 08:25 PM

hi im having some problems with a 12v car amplifier i dont think any of that mofsets or transorferms are gone becuse it still works some times thats the problem it works some times and other dosent have any power i have had i look in side but when i did everythink worked there arnt to many wires to go loose and i have allredy tried that

thanks in advanced

ps. i am after a power supply to power it but carnt find any with the power that it needs i have come acrosss a forum saying you can make one with two pc power supply but they are useing 400w ones i only have 200w's

Leolabs · 7th January 2006, 01:14 AM

Try to resolder all the solder joints.

sagarverma · 7th January 2006, 06:46 AM

dry solder joints.

resolder the ckt.

hicksy_5 · 7th January 2006, 11:23 PM

thanks for the help do you think it might be the thermostat the heat cut off or somthing do you know how to disable it or fix it im not sure what is wrong but it could be sitting there and with out any movement or anything it just cut out

DoomPixie · 13th January 2006, 02:52 AM

as has been said already, it's probably dry joint's somewhere. the amp heats up and the conection is lost. have a look at all the solder joints with a magnifying glass and see if you can see any that look cracked atall or look dull, if you find any liek that then resolder them. if you do this and it is still not working then report back and we will try and help track down the problem. I'm not sure this thread is int he right place though?
Owen

6th January 2006, 08:25 PM	#1
hicksy_5 diyAudio Member Join Date: Jan 2006 Location: austalia qld	problems with mofset car ampilifier hi im having some problems with a 12v car amplifier i dont think any of that mofsets or transorferms are gone becuse it still works some times thats the problem it works some times and other dosent have any power i have had i look in side but when i did everythink worked there arnt to many wires to go loose and i have allredy tried that thanks in advanced ps. i am after a power supply to power it but carnt find any with the power that it needs i have come acrosss a forum saying you can make one with two pc power supply but they are useing 400w ones i only have 200w's

7th January 2006, 06:46 AM	#3
sagarverma diyAudio Member Join Date: Feb 2005 Location: NEW DELHI	dry solder joints. resolder the ckt. __________________ Never Underestimate The Bandwidth of A Station Wagon Full Of Magnetic Tapes Hurtling Down The Highway...................Andrew S Tanenbaum

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7th January 2006, 01:14 AM	#2
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Try to resolder all the solder joints.

7th January 2006, 11:23 PM	#4
hicksy_5 diyAudio Member Join Date: Jan 2006 Location: austalia qld	thanks for the help do you think it might be the thermostat the heat cut off or somthing do you know how to disable it or fix it im not sure what is wrong but it could be sitting there and with out any movement or anything it just cut out

13th January 2006, 02:52 AM	#5
DoomPixie diyAudio Member Join Date: Jun 2005 Location: Aberystwyth / Llanelli (wales)	as has been said already, it's probably dry joint's somewhere. the amp heats up and the conection is lost. have a look at all the solder joints with a magnifying glass and see if you can see any that look cracked atall or look dull, if you find any liek that then resolder them. if you do this and it is still not working then report back and we will try and help track down the problem. I'm not sure this thread is int he right place though? Owen

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