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Old 6th January 2017, 12:50 AM   #1
Listen is offline Listen  United States
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Default Harman Kardon FL8400 belts

I recently picked up an HK FL8400 off Craigslist to serve as a workbench digital source for a DAC project (TDA1541A) I am working on. Being 20+ years old I expected that it would need servicing and it did. Two belts had hardened to the point they would no longer roll; the belt that rotates the cd tray and the belt that raises and the lowers the reader mechanism. The third belt, the one that opens and closes the cd drawer, was fine. I looked around for replacements and found that OEM parts were unobtainium. I decided to try o rings as replacement belts and ordered two sets off eBay, one SAE and one metric. Total $15 shipped for 789 o rings. It turned out that a metric -115 ring was a near perfect replacement; not so tight as to stress the transport parts, but tight enough to assure smooth operation.

The player took a little while to break in and now works perfectly. The bottom line is that I have a rather nice sounding CD player, which was a pleasant surprise, and lifetime supply of o rings for a total of $35.

John

Last edited by Listen; 6th January 2017 at 12:53 AM.
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Old 16th February 2017, 11:50 PM   #2
Listen is offline Listen  United States
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It has been a bit more than a month and I can report that the o rings are a success. When I first installed them the player occasionally hesitated, but after a couple of weeks of use it has settled in and is now working perfectly. I can load five cds and play them on random shuffle, which is about as demanding a task as you can ask of the transport, with no problems, hesitations or errors.

As there is quite a bit of room inside the box so I think I will install a tube output stage, probably a 6n2p. Can anyone recommend a nice toroid for it?

John
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