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Babelfish M25, SissySIT - general building tips and tricks
Babelfish M25, SissySIT - general building tips and tricks
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Old 14th March 2019, 04:43 PM   #651
bk856er is offline bk856er  United States
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Babelfish M25, SissySIT - general building tips and tricks
kbergsson, see post #62?

BK
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Old 14th March 2019, 04:48 PM   #652
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
Default Cinemag CMOQ orientation on pcb

xformer pic :

red dot Pin 1
black dot Pin 2
Pin 1 and Pin 2 are closer together than rest of pins

cut corner pins marked with green arrows

pcb pic - black circle and arrow - Pin 2

edit: link to this post included in post #1
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Last edited by Zen Mod; 14th March 2019 at 04:51 PM.
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Old 14th March 2019, 04:49 PM   #653
Ben Mah is offline Ben Mah  Canada
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Post #62 as BK said. Transformer is placed at the very end of the board. The pins should slide in easily. If they don't, you do not have the transformer placed correctly.

Also what ZM said.

Last edited by Ben Mah; 14th March 2019 at 04:53 PM. Reason: Slower than the mightly ZM
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Old 14th March 2019, 05:00 PM   #654
kbergsson is offline kbergsson  Iceland
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Thanks a lot ZM, BK & Ben I see my orientation is correct.
I have plowed through the tread 3-4 times over the last couple of months, still didnt remember #62
Now next step is to dissassemble my M2 so I can reuse powersupply and box for Sissy. Need another box and supply so I can compare M2 and Sissy at a later date.
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Old 14th March 2019, 05:04 PM   #655
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
Quote:
Originally Posted by kbergsson View Post
Thanks a lot ZM, BK & Ben I see my orientation is correct.
I have plowed through the tread 3-4 times over the last couple of months, still didnt remember #62
Now next step is to dissassemble my M2 so I can reuse powersupply and box for Sissy. Need another box and supply so I can compare M2 and Sissy at a later date.
I believe pretty much everything is covered in post#1

though , if you cant find it , just ask

I have no problems repeating what's needed ....... better that way than to leave out that gray smoke

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Old 15th March 2019, 11:16 AM   #656
KweeSong Lim is offline KweeSong Lim  Singapore
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Babelfish M25, SissySIT - general building tips and tricks
Repaired my SissySIT. Unfortunately besides the burnt IRFP9140, the THF51 also burnt together with R20, DZ1 and DZ2. All’s well and singing again. Put bigger washer as ZenMod suggested. I will install heatsink fans for peace of mind.
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Old 15th March 2019, 11:49 AM   #657
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
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Old 16th March 2019, 01:48 AM   #658
Russellc is offline Russellc  United States
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Babelfish M25, SissySIT - general building tips and tricks
Just noticed my R4 and R5 are 27, not 39 as change in your notes. Are my critters proper idss or should I change to 39 now?

Also to blind to find RSL or RSR on schematic. Pad by optocoupler. Post 7 and 8 added to confusion!

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Last edited by Russellc; 16th March 2019 at 02:11 AM.
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Old 16th March 2019, 02:29 AM   #659
Russellc is offline Russellc  United States
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Babelfish M25, SissySIT - general building tips and tricks
Found RS critters, only on M25, not used on Sissy, right?
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Old 16th March 2019, 10:04 AM   #660
Zen Mod is offline Zen Mod  Serbia
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Babelfish M25, SissySIT - general building tips and tricks
yeah , resistor along opto - named Rs as for Rshunt

used in B. M25 , not in Sissy

27 or 39 ..... you have good chance that 27 is enough ..... just later I realized that some JFet triplets are asking for more than 27R

blame on me ........ and (as usually) I'll blame Pa , he didn't taught me well enough
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Last edited by Zen Mod; 16th March 2019 at 10:06 AM.
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