I've had this amazing amp since before 2012, always been a champ. Recently it started to play at reduced volumes. But only sometimes. Sometimes it plays just fine and them boom, back to less than half the normal output. The RCA outputs feed reduced signal to the next amp a Kicker 350.4.
The protection light briefly flashes once and then goes off, and it plays at reduced volume. When I turn it off, it also flashes protection briefly.
I opened up the 750.1 and C35 is all blowed up. This amp has been around salty air for the past four years.
I'm in a pretty remote part of mexico with just a basic multimeter and weak cell service. I do have a soldering iron and sucker. And I can probably find electronica parts about 2 hours away
Is this worth trying to fix?
The protection light briefly flashes once and then goes off, and it plays at reduced volume. When I turn it off, it also flashes protection briefly.
I opened up the 750.1 and C35 is all blowed up. This amp has been around salty air for the past four years.
I'm in a pretty remote part of mexico with just a basic multimeter and weak cell service. I do have a soldering iron and sucker. And I can probably find electronica parts about 2 hours away
Is this worth trying to fix?
Attachments
Someone else who can answer your question directly should be along to help.
Before you close up the amp, you need to remove 100% of the brown fixative on the LED. It has a tendency to become both conductive and corrosive. Replacement of adjacent components may be required.
Before you close up the amp, you need to remove 100% of the brown fixative on the LED. It has a tendency to become both conductive and corrosive. Replacement of adjacent components may be required.
C35 is a 222(M) 630v 2200 picofarad capacitor, You will also need to change R36-100 ohm 2 watt resistor.
Because the the RCA's are passing the the reduced signal to the 350.4 the problem is most likely in the front end.
There is however a possibility a C169-10uf 200v NP capacitor that lays down, underneath the preamp board may have been pierced by the
user control pins that poke through the board.
I will get back to you in a day or two.
My honest opinion is this amp is worth fixing.
Because the the RCA's are passing the the reduced signal to the 350.4 the problem is most likely in the front end.
There is however a possibility a C169-10uf 200v NP capacitor that lays down, underneath the preamp board may have been pierced by the
user control pins that poke through the board.
I will get back to you in a day or two.
My honest opinion is this amp is worth fixing.
Awesome, I just saw this reply. Thanks so much for the additional info, I can look for parts on Mercado Libre and Amazon. I've been busy, Had a blown tire, a blown radiator hose, smashed windshield, failed window switch, and a bunch a little other van problems I've been sorting out. I ended up buying a CXA 1200.1 to replace the 750.
My buddy on the beach had a Alpine SRW 12 D4 in a decent enclosed so I grabbed that for 2200 pesos. This replaced a Kicker CompVR.
The new to me alpine sub running at 2ohms on the 1200.1 is hitting ridiculously hard.
I spent a lot of money on van parts and new stuff so I have to lay low and grow my stack again. Got a 100a CV/CC AC/DC to feed the system when I'm at camp.
I took apart all the new electronics and sprayed the PCBs with several coats of Acrylic Conformal Coating. I hope this helps protect against the salty air.
Electronics dying of death is the price you pay to live in paradise.
I've got my soldering iron and solder sucker but no stand and only a basic multimeter. I had a clamp meter but it died from corrosion. My drill charger just went out too.
Anyway, I'll upload some pics and links to some YouTube vids that I took soon. Gotta go to wifi. Much love, peace
My buddy on the beach had a Alpine SRW 12 D4 in a decent enclosed so I grabbed that for 2200 pesos. This replaced a Kicker CompVR.
The new to me alpine sub running at 2ohms on the 1200.1 is hitting ridiculously hard.
I spent a lot of money on van parts and new stuff so I have to lay low and grow my stack again. Got a 100a CV/CC AC/DC to feed the system when I'm at camp.
I took apart all the new electronics and sprayed the PCBs with several coats of Acrylic Conformal Coating. I hope this helps protect against the salty air.
Electronics dying of death is the price you pay to live in paradise.
I've got my soldering iron and solder sucker but no stand and only a basic multimeter. I had a clamp meter but it died from corrosion. My drill charger just went out too.
Anyway, I'll upload some pics and links to some YouTube vids that I took soon. Gotta go to wifi. Much love, peace