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Old 23rd July 2009, 03:13 PM   #11
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Hi gychang

Your input caps can be used either way round if they are unmarked, if they have polarity then positive to the board and negative to the volume control..
You will only need one 10,000uF tank cap..
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Old 23rd July 2009, 05:56 PM   #12
gychang is offline gychang  United States
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Quote:
Originally posted by audio1st
Hi gychang

Your input caps can be used either way round if they are unmarked, if they have polarity then positive to the board and negative to the volume control..
You will only need one 10,000uF tank cap..
thanks much, will get this done by this weekend. sent u an email.

gychang
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Old 26th July 2009, 01:31 AM   #13
gychang is offline gychang  United States
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Default problems on mod!

I wanted to put new input caps, and volume pot with on-off. Mainly following audio1st excellent photo from Sure TA2024 upgrade.

1. Desoldered and bridged D1, C13, but C21, the pad came off and following the below photo based on Sure TA2024, as u can see I think I have it right but now when I turn on just static on both channels, with the C21 pad exposed before C24-R14 bridge only Ch1 as expected played music.
2. Input caps are in, and so is the tank cap (by the way when I disconnected this cap, music did not change on Ch1, is this expected?).

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

on this board, there is unmarked resistor below C21, should I solder to this resistor?

I hope some can help me out.

gychang
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Old 26th July 2009, 05:10 PM   #14
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Hi Greg, first I think you have soldered to the wrong pad of C24, this is not the Sure board..
You may also have the other end of the wire connected to the wrong place. The resistors have different values and numbers to the Sure board?
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Old 26th July 2009, 05:58 PM   #15
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My guess would be to remove the wire you have added and link as in attached picture..
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Old 26th July 2009, 06:19 PM   #16
gychang is offline gychang  United States
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Quote:
Originally posted by audio1st
My guess would be to remove the wire you have added and link as in attached picture..

thanks so much, wil try it.

gychang
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Old 26th July 2009, 06:54 PM   #17
gychang is offline gychang  United States
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Quote:
Originally posted by audio1st
My guess would be to remove the wire you have added and link as in attached picture..

it still is the problem, that channel still no music, clicks on power on as before. Will try to take pic later.

gychang
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Old 26th July 2009, 11:42 PM   #18
gychang is offline gychang  United States
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audio1st, can u spot anything wrong?, no channel 2 after last try.

Click the image to open in full size.

gychang
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Old 28th July 2009, 03:26 PM   #19
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Hi Greg, this is most likely...
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Old 28th July 2009, 05:39 PM   #20
gychang is offline gychang  United States
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Quote:
Originally posted by audio1st
Hi Greg, this is most likely...
thank you, will solder it tonight.

gychang
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