DerekTheGreat
Forum Regular
Thanks Triple, I appreciate it!
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Thanks Triple, I appreciate it!
I am willing to do a write up on fixing the 89 style radio box. I have read that it is a capacitor problem but do not know which is the correct part. Anyone know which it is from the pictures?You must be registered for see images attachYou must be registered for see images attachYou must be registered for see images attach
Like @df2x4 said, just replace all of the electrolytic capacitors, they don't age well.I am willing to do a write up on fixing the 89 style radio box. I have read that it is a capacitor problem but do not know which is the correct part. Anyone know which it is from the pictures?You must be registered for see images attachYou must be registered for see images attachYou must be registered for see images attach
Its not that hard. I just had mine apart. It was working ok so i just cleaned and looked it over for any components that looked like they may have been hot. After you pull the amp out you have to remove the top cover one of the screws is too close to the heatsink and I had too grind the heatsink a little to get it out. There are two tabs soldered to the top board that have to be unsoldered and bent away so you can lift it out. also the side bracket mounting bolt will have to push toward the back and come out. The top board plugs into the lower board with two sets of connectors. after you get the lower board out you will either have to grind or bend the fins on top of the heatsink to get to the 4 small screws in between. It has to come off to get to some of the capacitors better. The large filter cap at the rear Is a 4000uf 16 volt, Kinda oddball. A 3900uf is a bit more common and within 20% and less expensive and will work fine, Just make sure to get the same physical size as I don't think theres any extra room for that one. Most of the others are normal computer values and should be easy to find. There's also a few in the head unit. At 12-14 volts they are pretty reliable but age will eventually get everything. Sorry i didn't take any photos of the amp. Heres one of the head unit with three electrolytic caps.Nice job. I wish someone would write up the procedure for replacing the power supply capacitors in the stock amplifier unit (the part mounted above the accelerator pedal) which is what usually craps out in these radios. I went aftermarket and I really enjoy the bluetooth capability but restoration of the stock radio would be a good goal for someone attempting an authentic full restoration.25 year old capacitors WILL crap out, so if you go this route you should be prepared for it to happen.