Monoblock Doesnt Work! Help Please!

[toan]

hi guys

i have pioneer monoblock dont't have the actual model number on me now! but its the all black one with a red light 800W sats on top.

well it use to work in my old car but i took it off and was sitting there for like 3-4 months.

the two fusses on the block are fine!

i went to go and use it today the amp light comes on but there's only a tiny bass sound thats it! i put it into my mates car same thing but when turned up the settings to the max on amp and headunit it makes bass but not a clear.

help me please guys!

thanks

[Shiraz200SX]

the model will be something like GM-D****M but if its the one i'm thinking of, they only make about 400wrms or so, so maybe your sub is too large or your signal/earth/power is poor. Take it to a place with a test bench (ie Autobarn, any CAMS dealer, any independant car audio store) and get them to have a look. Now they will probably only be able to tell you whether its broken or not, and give you an idea on what you can do to replace it.

I usually just reccomend replacement for any amplifier worth under 500-1000 depending on what type, seeing as though professional electrical engineer labour doesnt come cheap, neither do replacement parts from pioneer, IF you can still get them. Other option is to send to pioneer, you'll pay a fee to get a quote to repair it (only paid if you dont get the job done) and then they'll fix it once you pay the quoted amount (be prepared for a long wait, they're understaffed, and non-warranty repairs take a back seat to warranty jobs).

so look to replace it, you can flog the broken amp (if it doesnt work) off to some douche (if you have no scruples), or use it as a boat anchor or whatever.

[Carbon 34]

try another RCA cable run outside the car to the amp ?

check for grounded out RCA jacks, bent inputs ?

double check the amp ground ?

try another speaker, anything will work to see if the voice coil is bad on the SUB

does the AMP have at least 12 volts going into the power connection ???

is the amp screwed down to tight on uneven surface and warping the chassis ???

if all the above looks fine, pull it to bench test it , might have a bad pre amp section in it or voltage is low on the transistor rails ???

these amps and better ones are cheap as on ebay and audio shops now, so do your homework before dropping a boat load of cash to fix it.

[Jack88]

All valid points to check there troy. I was watching the same model amp on Ebay a couple of weeks ago, ended up going for about $130 so if you around they can be had for fairly cheap.