Paradise Builders - Page 46 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th December 2012, 07:25 PM   #451
beetle is offline beetle  Germany
diyAudio Member
 
Join Date: Mar 2008
Quote:
Originally Posted by FdW View Post
That is 1.9 + 3.4 = 5.3V the expected voltage here is V(L111) + V(L112) - Vbe(Q104) and that is 1.9 + 1.9 - 0.6 = 3.2V. It is actualy 2.1V to high, check the led voltages L111 and L112 and replace them if needed. Replace Q4 and posibly replace Q103.

There is one thing that I do not understand, V(L110) = 1.918V so V(R104) should be 1.9 - 0.6 = 1.3V and I(R104) should be 1.3 / 10 = 130mA and that should not depend on V(TP103), mmm... anyone else?
Could it be that Q104 has to high hfe or something? I just replaced Q104 and I(in) @30V is now 196mA. Before it was 210mA. I believe this is still to much as it is 148mA at neg rails.

By the way... all LEDs measure 1.9V.
  Reply With Quote
Old 6th December 2012, 07:44 PM   #452
FdW is offline FdW  Netherlands
diyAudio Member
 
FdW's Avatar
 
Join Date: Feb 2009
Location: Both feet on the ground (near Gouda)
Quote:
Originally Posted by beetle View Post
Could it be that Q104 has to high hfe or something? I just replaced Q104 and I(in) @30V is now 196mA. Before it was 210mA. I believe this is still to much as it is 148mA at neg rails.

By the way... all LEDs measure 1.9V.
Hfe problems? not seen yet The small signal transistors in the PSU are good as long as they have 'any' Hfe (20 and up will do ). I think you should also replace the associated power transistor (just to be sure).
  Reply With Quote
Old 6th December 2012, 07:47 PM   #453
beetle is offline beetle  Germany
diyAudio Member
 
Join Date: Mar 2008
By the way... I have the same issue with the other board. I was checking for stuffing mistakes but can not find any. Need to obtain this transistor first.
  Reply With Quote
Old 7th December 2012, 10:09 AM   #454
diyAudio Member
 
Join Date: Jun 2004
Location: sheffield
Send a message via MSN to sq225917
https://www.rush-on-line.co.uk/cap_index.php

I bought a bag of 33nf and 11nf, they needed padding out to get them perfect, 0.1%, but they came out of the bag within a % or so of each other.

Of course they are polystyrene caps so don't 'weld' them to the ground plane. Much easier to solder them like smt caps to the top of the pads in the RIAA section and not risk melting them.

Click the image to open in full size.
__________________
hoping to pick up some things.
  Reply With Quote
Old 7th December 2012, 02:58 PM   #455
beetle is offline beetle  Germany
diyAudio Member
 
Join Date: Mar 2008
Is there somewhere the silkscreen overlay as pdf available? Just want to recheck the parts.
  Reply With Quote
Old 7th December 2012, 07:19 PM   #456
diyAudio Member
 
Benedetto's Avatar
 
Join Date: Nov 2007
Location: Knifetown-Germoney
Hope this will help
http://www.diyaudio.com/forums/attac...3-stuffing.pdf
__________________
preregulatorpeterE-MAIL

Last edited by Benedetto; 7th December 2012 at 07:21 PM.
  Reply With Quote
Old 7th December 2012, 07:28 PM   #457
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
sq do these guys have a minimumorder/
  Reply With Quote
Old 7th December 2012, 09:06 PM   #458
beetle is offline beetle  Germany
diyAudio Member
 
Join Date: Mar 2008
Quote:
Originally Posted by Benedetto View Post
Thank you! I Just quadruple checked the components. Stuffing looks fine. Annoying. Group buy came with D45H11 PNP tranies instead of TIP32C. Will obtain TIP32 transistors from reichelt and try again.
  Reply With Quote
Old 7th December 2012, 09:49 PM   #459
diyAudio Member
 
Join Date: Jan 2011
Location: Fosser, Aurskog-Holand, Akershus, Norway.
Pardon me for asking.

Is the schematics and layout available for us who were too late in here to buy when the groupbuy was open?
__________________
Sooner or later you end up with TANDBERG
  Reply With Quote
Old 7th December 2012, 09:58 PM   #460
pdul is offline pdul  Denmark
diyAudio Member
 
Join Date: Jan 2009
Location: Copenhagen
Quote:
Quote:
Originally Posted by Benedetto
Hope this will help
http://www.diyaudio.com/forums/attac...3-stuffing.pdf

Thank you! I Just quadruple checked the components. Stuffing looks fine. Annoying. Group buy came with D45H11 PNP tranies instead of TIP32C. Will obtain TIP32 transistors from reichelt and try again.
I used MJE15032/15033 with good result
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Paradise phono stage hesener Group Buys 1315 11th August 2014 10:37 PM
DIY Paradise - Any good to buy from? gingerpimp0069 Vendor's Bazaar 7 21st June 2007 02:07 PM
DIY Paradise Charlize Jolojl Swap Meet 7 7th December 2006 06:42 AM
Diy Paradise! alexmoose Tubes / Valves 3 24th July 2006 04:37 AM
Another way to paradise ? Bernhard Pass Labs 3 8th August 2003 10:19 PM


New To Site? Need Help?

All times are GMT. The time now is 08:51 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2