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Author Topic: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart  (Read 9782 times)

thesteve

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #105 on: December 17, 2011, 12:31:16 PM »
if you hit the reply button it opens the full post editor
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BlueBMW

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #106 on: December 17, 2011, 12:53:57 PM »
Its usually easiest to host the pictures on another site like photobucket and then link to them here.
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Alexander78

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #107 on: December 17, 2011, 09:24:20 PM »
Quote from: thesteve on December 16, 2011, 06:51:58 AM
some good pics would be helpfull (pics of the board and the video defect)


thesteve ok, start to post link pictures ....

The PC engine now is in the lab by my technician, the photos that I have right now are all shielded in the board....

I hope that these photos can help you to understand my problem, I do not know if my board is to clean or is damaged ....

I can not do the video .... because my pc-engine Gt is in a laboratory by a technician who does not know what to do. However, when you turn on my pc-engine Gt the screen is black after a few minutes then slowly stabilizes the image screen and you can see well with good colors, Instead the audio
is very low but with headphones you feel better.

I post link my images....


link Photo high-resolution

http://img828.imageshack.us/img828/3886/photo8upk.jpg


other link Photo Board high-resolution

http://img526.imageshack.us/img526/9394/photo3var.jpg


other link Photo

http://img338.imageshack.us/img338/7686/photo4iz.jpg


other link

http://img85.imageshack.us/img85/8779/photo5ry.jpg


Even if they are photo with board  shielded I hope that can help.


« Last Edit: December 17, 2011, 10:07:54 PM by Alexander78 »
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thesteve

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #108 on: December 17, 2011, 09:56:34 PM »
hmm i was hoping for the after pics.
that does not look bad at all (should have been a simple cap swap to fix it)
the real question is what damage was done during the cap swap
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Alexander78

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #109 on: December 18, 2011, 11:05:17 AM »
thesteve what do I do....  I do not understand almost nothing about electronics.
Maybe solve this problem, is like finding a needle in a haystack.
The same capacitors are used with the same values and see some capacitors that explode when they are replaced it is not normal.

my technician wants information, what can I tell him to do  ? ? ? ?  :-k
   
( thesteve aspect  your advice, to put it to my technician to try to solve my problem )

« Last Edit: December 18, 2011, 11:49:41 AM by Alexander78 »
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thesteve

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #110 on: December 18, 2011, 12:06:42 PM »
its not normal for the replaced ones to explode.
it took many years for the original caps to fail, the same can be expected of the replacements.
the slow pic is likely due to cap failure, however its possible for the lamp to fail as well.
the sound circuit will need to be traced out to solve it, as it appears to no longer be an issue covered.
fortunately the sound circuit is very strait forward, any electronics tech should have no issue trouble shooting it.
the speaker is driven off the headphone jack directly.
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Alexander78

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #111 on: December 18, 2011, 08:35:22 PM »
ok thank you,  thesteve
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constantt

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #112 on: December 21, 2011, 01:55:33 PM »
Dear All,

Thanks for your contribution on repairing PCE GT/TE!  :D

I've already successfully fixed the sound problem with replace the 16V 100uF cap.  However, I've also experienced the dark screen problem on my GT & I've tried to reaplce the 35V 4.7uF cap with a 50V 4.7uF (since I cannot find a 35V 4.7uF cap anymore).  The back light came back, however it's going too light, even I adjust to the lowest brightness, it's still too light.  Any suggestion on this?

Looking forward to your reply

Best Regards
Constant
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HercTNT

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #113 on: December 21, 2011, 03:13:06 PM »
mouser or digikey should have the capacitor your looking for.  Ask thesteve about the backlight, he recently repaired a gt for me and can most likely help.
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BlueBMW

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #114 on: December 21, 2011, 03:27:55 PM »
Quote from: constantt on December 21, 2011, 01:55:33 PM
Dear All,

Thanks for your contribution on repairing PCE GT/TE!  :D

I've already successfully fixed the sound problem with replace the 16V 100uF cap.  However, I've also experienced the dark screen problem on my GT & I've tried to reaplce the 35V 4.7uF cap with a 50V 4.7uF (since I cannot find a 35V 4.7uF cap anymore).  The back light came back, however it's going too light, even I adjust to the lowest brightness, it's still too light.  Any suggestion on this?

Looking forward to your reply

Best Regards
Constant


If the screen is staying too bright even with the contrast adjusted all the way down, its usually because your batteries are almost dead.  Try a fresh set and see if that makes a difference!
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constantt

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #115 on: December 22, 2011, 04:17:53 AM »
Quote from: BlueBMW on December 21, 2011, 03:27:55 PM
Quote from: constantt on December 21, 2011, 01:55:33 PM
Dear All,

Thanks for your contribution on repairing PCE GT/TE!  :D

I've already successfully fixed the sound problem with replace the 16V 100uF cap.  However, I've also experienced the dark screen problem on my GT & I've tried to reaplce the 35V 4.7uF cap with a 50V 4.7uF (since I cannot find a 35V 4.7uF cap anymore).  The back light came back, however it's going too light, even I adjust to the lowest brightness, it's still too light.  Any suggestion on this?

Looking forward to your reply

Best Regards
Constant


If the screen is staying too bright even with the contrast adjusted all the way down, its usually because your batteries are almost dead.  Try a fresh set and see if that makes a difference!


Hi BlueBMW,

Really thanks for your help & it's work perfectly after I changed the battery!!  Sorry for boring you guys!!

Best Regards
Constant
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NightWolve

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Will teh NightWolve successfully repair his TurboExpress or fail miserably ? ? ?
« Reply #116 on: April 27, 2012, 06:13:49 PM »
** Organized TurboExpress Part List (4-27-2012)

Qty.
Part #
Description
Price
Ext. Price
6493-2088-1-ND"CAP ALUM 100UF 6.3V 20% SMD"
0.44
$2.64
3493-2105-1-ND"CAP ALUM 100UF 16V 20% SMD"
0.47
$1.41
2PCE3859CT-ND"CAP ALUM 33UF 6.3V 20% SMD"
0.49
$0.98
1P5114-ND"CAP ALUM 470UF 6.3V 20% RADIAL"
0.25
$0.25
1493-2118-1-ND"CAP ALUM 22UF 35V 20% SMD"
0.51
$0.51
1493-2083-1-ND"CAP ALUM 22UF 6.3V 20% SMD"
0.50
$0.50
1493-2099-1-ND"CAP ALUM 10UF 16V 20% SMD"
0.48
$0.48
1PCE4304CT-ND"CAP ALUM 4.7UF 50V 20% SMD"
0.71
$0.71
1PCE4643CT-ND"CAP ALUM 4.7UF 35V 20% SMD"
0.50
$0.50
1P1142-ND"CAP ALUM 47UF 6.3V 20% RADIAL"
0.30
$0.30
Subtotal
$8.28
Shipping/Tax
~$3.22
Total
~$11.50

Eh, I decided to move over most of this post to my own thread:

http://www.pcenginefx.com/forums/index.php?topic=11660.0
« Last Edit: April 28, 2012, 01:58:45 PM by NightWolve »
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Frank_fjs

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #117 on: October 05, 2012, 06:17:55 PM »
Need some help guys, very confused at the moment. :)

Trying to work out which caps would be best, should I go for all SMD Tantalum or is that overkill and should I just use aluminium caps instead?

I see that Steve has mentioned using ceramic caps but I can't work out where these should be used, he seems to use a combination of both Tantalum and ceramic?

Also, if someone has the time, could you tell me if these are the right parts?

4.7uF 35V: http://au.element14.com/nichicon/f931v475mcc/capacitor-tant-4-7uf-35v-1-8-ohm/dp/1818596
4.7uF 50V: http://au.element14.com/vishay-sprague/593d475x9050d2te3/capacitor-tant-4-7uf-50v-0-6-ohm/dp/1614982
10uF 16V: http://au.element14.com/nichicon/f931c106mba/capacitor-tant-10uf-16v-2ohm-3528/dp/1818581
22uF 6V: http://au.element14.com/nichicon/f930j226maa/capacitor-tant-22uf-6-3v-2-5ohm/dp/1818568
22uF 35V: http://au.element14.com/vishay-sprague/293d226x9035e2te3/capacitor-tant-22uf-35v-0-6-ohm/dp/9303669
33uF 6V: http://au.element14.com/vishay-sprague/tr3a336k6r3c0600/capacitor-tant-33uf-6-3v-0-6ohm/dp/1615383
100uF 6V: http://au.element14.com/nichicon/f910j107mcc/capacitor-tant-100uf-6-3v-0-25ohm/dp/1818563
100uF 16V: http://au.element14.com/vishay-sprague/tr3d107k016c0100/tantalum-capacitor/dp/1616462
470uF 6.3V: http://au.element14.com/kemet/t495d477k006ate100/capacitor-tant-470uf-6-3v-0-1ohm/dp/1642274

Perhaps a better question to ask, does anyone here sell cap kits for the GT?
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NightWolve

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #118 on: October 05, 2012, 06:22:21 PM »
Definitely go for ceramic/tantalum if you're willing to spend the extra dough. You'll eliminate that very apparent hum in the audio if you avoid standard, electrolytic aluminum caps like I used... :( Yeah, forget my list above there which are for the original SMD aluminum types which are harder to solder back on. Ceramic ones you won't have to worry about polarity and tantalums you will.
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Frank_fjs

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Re: REPAIR GUIDE - TurboExpress: Total capacitor replacement chart
« Reply #119 on: October 05, 2012, 06:40:33 PM »
So you can use ceramic caps for all of them?

As an example, for the 4.7uF 35V cap, is this what I'm after?

http://au.element14.com/taiyo-yuden/gmk316f475zg-t/capacitor-4-7uf-35v5v-1206/dp/2112843?in_merch=New%20Products

or

http://au.element14.com/taiyo-yuden/gmk325bj475mn-t/capacitor-ceramic-4-7uf-35v-x5r/dp/1683538

Not really sure what the difference is between the above two caps, aside from price and temperature range. Does it matter which one I get?
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