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Skywatcher Motherboard components


chaotic-one
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8 minutes ago, AbsolutelyN said:

Not much info to go on but suggest you look here:
https://www.firstlightoptics.com/search/for/mother+board/

I've also had good experience from contacting Skywatcher direct but you'll need to give them much more info such as which product... 

http://www.opticalvision.co.uk/contact_ovl.html 

 

Thanks for the quick answer, but they do not have the synta mc004 board in stock (I saw a 4month delivery timeline from Skywatcher. I am looking for the actual component at the L4 location on the motherboard

 

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MC004 is for a Dob mount. 

L3 an L4  are small surface mount ferrite beads that form a filter with two capacitors, possibly C8 and C9.  They are possibly BLM31PG500SN1L (or equivalent)  with the following spec:,

1206 [3216 Metric], 50 ohm, 3.5 A, EMIFIL BLM31P Series, 0.015 ohm

Available form most online suppliers (but most are affected by shortages due to CV19)

Having repaired several SW motor boards you may find that then two 16F886's have blown as well depending what you did to damage the board.  If you replace L1 / L2 and still get a "no response both axis" then you'll need to replace the PICs and have them programmed. as covered in this thread

EDIT - On HEQ5 / EQ6 boards L3 and L4 are Ferrite Beads - on the MC003 Schematic I have (similar to a MC004 for a Dobsonian) L4 is shown as an inductor....with no component value.  It connects pins 1 and 4 of the link cable connector to ground.  

Edited by malc-c
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9 hours ago, malc-c said:

MC004 is for a Dob mount. 

L3 an L4  are small surface mount ferrite beads that form a filter with two capacitors, possibly C8 and C9.  They are possibly BLM31PG500SN1L (or equivalent)  with the following spec:,

1206 [3216 Metric], 50 ohm, 3.5 A, EMIFIL BLM31P Series, 0.015 ohm

Available form most online suppliers (but most are affected by shortages due to CV19)

Having repaired several SW motor boards you may find that then two 16F886's have blown as well depending what you did to damage the board.  If you replace L1 / L2 and still get a "no response both axis" then you'll need to replace the PICs and have them programmed. as covered in this thread

EDIT - On HEQ5 / EQ6 boards L3 and L4 are Ferrite Beads - on the MC003 Schematic I have (similar to a MC004 for a Dobsonian) L4 is shown as an inductor....with no component value.  It connects pins 1 and 4 of the link cable connector to ground.  

Thanks Malcolm, was a long read and interesting, most of which I had forgotten when I was re-qualifying myself as a computer tech in Canada. Yes it is an Orion 16in dobsonian which had just bought. Are you still repairing these boards, if I send you our broken one?

Edited by chaotic-one
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