whats some really sticky solder?

[Twistid 5,000+ posts]

ok a friend and i managed to repair my amp... what had happend was the power terminal where the power wire goes into came off the circuit board i assume because it was mounted ontop of the box and my subs cause severe vibrations

well we took the amp apart, flipped the mobo around and at first i used some 50/50 solder and it dident make a solid connection that held worth shit! so my friend got his 60/40 i think it was (super thin stuff) and that actually held the power terminal in place, we flicked it and lightly pulled on it and it was in there tight... but of course after 5 minutes of play time the vibrations/pressure tore it back out again ! the amp does work! i can just put it back in place with a piece of cardboard between the power/ground and it works fine although i never actually do it longer than 15 seconds for test purposes (to make sure its not fried)

this is startin to make me mad, whenever the power terminal comes out it touches against the ground causing my 150A fuse to blow and those *****es are like $10 a piece ! so if someone could recommend some real "sticky" solder that when melted down is like slippery water, so it can spread and make a solid sturdy connecton

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[ramos 5,000+ posts]

Sounds like your melting the solder with the iron instead of letting it melt on the connection creating weak solder joints //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Twistid 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif , guess its time to re-arrange my trunk

 

[Twistid 5,000+ posts]

Sounds like your melting the solder with the iron instead of letting it melt on the connection creating weak solder joints //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i dont understand... i place the power terminal pins into the circuit board, flip it over and melt solder to go into the holes from underneath to secure the connection... is this wrong?

 

[ramos 5,000+ posts]

People been mounting amps on enclosures for years with no problems . Big thing against it , is that it makes for a quick snatch for a thief . //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ramos 5,000+ posts]

i dont understand... i place the power terminal pins into the circuit board, flip it over and melt solder to go into the holes from underneath to secure the connection... is this wrong?

Yep that's your problem cold joints . need to heat the wire and or spot on the board . Then melt the solder with that heat , not the iron //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Twistid 5,000+ posts]

heres a picture, do you see how the holes go all the way through the circuit board? i put the terminal in, flip it over, (after the mobo is removed from the metal base) and simply melt solder onto the holes so it seeps into the holes and makes a connection

is this wrong?

 

[ramos 5,000+ posts]

Are you using rosin core solder ? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ngsm13 5,000+ posts]

Yep that's your problem cold joints . need to heat the wire and or spot on the board . Then melt the solder with that heat , not the iron //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Yessir. This is the answer.

nG

 

[Twistid 5,000+ posts]

Yep that's your problem cold joints . need to heat the wire and or spot on the board . Then melt the solder with that heat , not the iron //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

so your telling me i have to put the iron onto the actual silicon circuit board then put solder onto it? wouldent that melt/burn the silicon?

 

[Twistid 5,000+ posts]

Are you using rosin core solder ? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i am unfamiliar with brands or types of solder, hence my post question... i originally used 50/50 solder, which i was told is "plumbing solder" then i got 60/40 which is electrical solder that made a good connection

is rosin core solder good? should i be asking for this type?

 

[ramos 5,000+ posts]

No , once you put the terminal pins in through the board and flip it over , heat the pins of the connector with the iron until the solder flows . Then touch the solder to the pins of the connector , not the iron //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ramos 5,000+ posts]

i am unfamiliar with brands or types of solder, hence my post question... i originally used 50/50 solder, which i was told is "plumbing solder" then i got 60/40 which is electrical solder that made a good connection
is rosin core solder good? should i be asking for this type?

Rosin core just has the flux in the middle of it . Flux helps the solder adhere better. But adhesion isn't your problem . You need to heat the metal pins of the connectors to the point the solder will melt on them , not the iron //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ramos 5,000+ posts]

And if your iron melts the board before your pins are hot enough to melt the solder. You need a stronger iron //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Twistid 5,000+ posts]

ok i getcha //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif , ill probably post pics once completed later, but i have to wait on my friend to come over again with his 100 watt solder gun, my 25 watt gun is quite pathetic