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Trio Ka-6004 found at the dump today

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Nik6667

New Member
Found a Ka-6004 at The dump today exterior great inside you tell me ,
No sound from speakers crackle if I jiggle a knob , could all this dust be the issue?
First 2 are the front end not toooooo bad but look a rear :(
 

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Complete newbie. I am what's the best way to remove dust? A tooth brush? Vacuum? Do I need to take it all apart?
Is this suitable to use I just had it lying around at home.
 

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I use a 3 in. Flat Chip Brush from HD for like 2$ for the big sections and a 1 inch for the corners and tighter areas. Usually outside.
Sometimes you need to take them apart, sometimes not.

All I've used is Deoxit. Read the link, or search it. See if your cleaner is mentioned. If that contact cleaner doesn't have lubrication in it, you will need some. I use FaderLube. Another Caig product.
 
Nik6667 said:
Complete newbie. I am what's the best way to remove dust? A tooth brush? Vacuum? Do I need to take it all apart?
Is this suitable to use I just had it lying around at home.
Click to expand...

Lucky you. KA-6004 is a nice sounding amp. I have its big brother, KA-6000, and would love to have a KA-6004, too.

How to clean it? Easy. I always use detergent and water to clean my collection of about 10 amps.

See #6 in
https://audiokarma.org/forums/index.php?threads/deoxit-qd-crc-residue-9090db.838568/

Also, https://www.amplifier.cd/Verstaerker/Reparatur/Reparatur_Receiver.html

I don't have an oven at home, so I use the tropical sun lights in Taiwan to do the job. Just bake it in the sun for 4~6 hours. :p
 
I use a long hair artist brush and a vacuum to remove interior dust. From your description, deoxit should help. Follow the thread here on AK on how to use. That’s how I learned to use it. Nice amp!
 
Hey there, nice to see your find! I have this Kenwood too, trying to remove the silver front panel in order to fix the power switch. Have you managed to remove the front? I’m stuck.
 
Looking4lux said:
Hey there, nice to see your find! I have this Kenwood too, trying to remove the silver front panel in order to fix the power switch. Have you managed to remove the front? I’m stuck.
Click to expand...

I just did it two weeks ago to wash the whole amp. Yes, you heard it right. Washed it with Simple Green and water.
If I remember correctly, it should be pretty straight forward. First, remove the cover. Then remove all knobs on the front panel. You can pull them all out except for the balance knob which you need to unscrew two lock screws. You will see three nuts on three switches once the knobs are removed. Unfasten those nuts. There are four screws left, two on top and two on bottom. Unscrew those four and then pull the front panel towards you. That should get the front panel off.

BTW, I've seen you posting the same question in multiple threads. Maybe you should start your own thread instead.
 
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Thank you, RobinTW, this will be very helpful. I didn’t dare to pull the knobs, they seemed so tightly fitted that I assumed something else had to be removed first. I will try this in order to get to the faulty power switch. By the way, is there a paper note attached to the power supply board in your KA-6004, by the 2A fuse? The service manual says 2A but a note attached in mine says 160mAT. It blew everytime I pushed the power switch. I’ve now replaced it with a 1A and it doesn‘t burn. Very strange. I’m new to the forum thing, I will start a new thread next time, thanks for your advice. Patrik, Stockholm, Sweden
 
Looking4lux said:
Thank you, RobinTW, this will be very helpful. I didn’t dare to pull the knobs, they seemed so tightly fitted that I assumed something else had to be removed first. I will try this in order to get to the faulty power switch. By the way, is there a paper note attached to the power supply board in your KA-6004, by the 2A fuse? The service manual says 2A but a note attached in mine says 160mAT. It blew everytime I pushed the power switch. I’ve now replaced it with a 1A and it doesn‘t burn. Very strange. I’m new to the forum thing, I will start a new thread next time, thanks for your advice. Patrik, Stockholm, Sweden
Click to expand...
No, there's no such paper note on mine. There are two fuses, 2A and 0.5A on the power supply board.
 
I thought it had something to do with the machine being an export product with 220 V. Here’s a pic of it:
 

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Check the back of the unit. Is it ONLY 220V? The Service Manual just shows one version with a switch for 120 or 220. The power supply section of the schematic lists 2A and 0.5 fuses.
 
Looking4lux said:
I thought it had something to do with the machine being an export product with 220 V. Here’s a pic of it:
Click to expand...

When I look at the schematic, I see what others see: F1 = .5A, F2=2A fuses.

ka-6004-ps.png
 
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Looking4lux said:
I thought it had something to do with the machine being an export product with 220 V. Here’s a pic of it:
Click to expand...
The power supply board is connected to the secondary side of the transformer. The voltage coming out of the secondary side should remain the same no matter what versions of the primary side are. However, the sticker on your board does look genuine and I don't know why it's there.

Here is my board.

power supply.jpg
 
jheu02 said:
Check the back of the unit. Is it ONLY 220V? The Service Manual just shows one version with a switch for 120 or 220. The power supply section of the schematic lists 2A and 0.5 fuses.
Click to expand...
Hello, the unit is made for both voltages, 110 and 220. I’m gonna lift off the front panel now, and try to see what’s up with the power switch. After that, I’ll try using the machine with speakers. Will be interesting to see if the fuse protests...
 
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