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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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 Posted: Fri Apr 01, 2011 12:13 pm Post subject: Volume problem with tape player playing in reverse direction |
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| My first post on this forum and hoping for some advice. I've got a really old Akai GX-370D tape recorder that I've had since the early seventies. And, I have many reels of Vietnam era music that I like to listen to. Eventually, I'll convert these to CD. In the meantime, I've lost considerable (not all) output volume when the tape is playing in the reverse direction. I've swabbed the heads with cleaner but that didn't help. Any advice you can give would be appreciated. If I need to take it to a repair shop, for head alignment or a component replacement, what can I expect in the way of cost? Does anyone have a schematic on this unit? Thanks. |
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jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
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| Posted: Fri Apr 01, 2011 4:53 pm Post subject: |
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http://elektrotanya.com/akai_gx-370d_sm.pdf/download.html
Check and burnish any Head or Record/Play relay contacts. Also chemically clean track selector controls/switches. Even seen plug-in board edge connections cause similar problems.
Once repaired, don't wait, convert before the next thing breaks or fails. 
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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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| Posted: Fri Apr 01, 2011 5:32 pm Post subject: Akai GX370D output |
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| So do I have to get inside the unit to get to these things? on a difficulty scale of 1 to 3, is this a one hammer, two hammer or three hammer project? Thanks. |
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jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
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| Posted: Fri Apr 01, 2011 6:25 pm Post subject: |
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You will need to get to the items mentioned which ARE inside the unit. S.M. has disassembly instructions.
Depends on your mechanical and electronics skill levels. (1 = bad / 3 = good? or vica versa?)
I'd highly recommend NOT using ANY hammers (nor to be hammered) if you attempt this project.
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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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| Posted: Fri Apr 01, 2011 7:43 pm Post subject: Thanks |
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| Thanks for the advice, and thanks especially for the link to the SM. |
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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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| Posted: Sat Apr 02, 2011 2:56 pm Post subject: Disassembly |
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| I've got the case off. Do I have to remove both the amp panel and the mechanical panels? Thanks. |
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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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| Posted: Sat Apr 02, 2011 4:35 pm Post subject: Knob set screws |
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| Anybody know what the size Allen wrench I need to get the knobs off? |
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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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| Posted: Sat Apr 02, 2011 8:19 pm Post subject: Head block |
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I've removed amp and mechanical panel, and I've located the playback relay. It's on the head relay board that's attached to the head block. Anybody know how to remove the head block?
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sumdumgai
Joined: 01 Apr 2011
Posts: 11
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| Posted: Sat Apr 02, 2011 8:51 pm Post subject: Head block is unattached now |
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| I removed the head block and pulled the head relay board through the front opening. Now I have access to the relay. How does the plastic cover come off so that I can clean the contacts? Thanks, |
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jts1957
Joined: 24 Nov 2008
Posts: 2476
Location: Far, Far Away
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| Posted: Sat Apr 02, 2011 11:07 pm Post subject: |
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Removing relay from the board - will then be obvious.
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