Sanwa 29e31s chassis problem

Post by **mozie** » February 22nd, 2013, 1:30 am

Just swapped out the chassis on my sanwa 29e31s and all i'am getting is a single line down the centre of the screen. have I hooked it up incorrectly? the remote boards seems to brighten/darken the line and the vertical adjustment makes the vertical line shorter or longer, the horizontal doesent seem to do anything.

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Post by **grantspain** » February 22nd, 2013, 9:37 am

either you have not connected the horizontal deflection connector or the horizontal output transistor has blown

Post by **moshpit** » February 22nd, 2013, 9:48 am

edit: never mind... I should read the full post first... and stop looking at pictures

Post by **mozie** » February 23rd, 2013, 5:54 am

grantspain wrote:either you have not connected the horizontal deflection connector or the horizontal output transistor has blown

Thanks, is it Fixable?

Hewitson · Post by **Hewitson** » February 23rd, 2013, 11:51 am

grantspain wrote:either you have not connected the horizontal deflection connector or the horizontal output transistor has blown

If the HOT was blown the flyback wouldn't be operating... Make sure the horizontal deflection is connected properly and check to make sure none of the wires have pulled off the top of the yoke.

Post by **grantspain** » February 23rd, 2013, 12:00 pm

Hewitson wrote:
grantspain wrote:either you have not connected the horizontal deflection connector or the horizontal output transistor has blown
If the HOT was blown the flyback wouldn't be operating... Make sure the horizontal deflection is connected properly and check to make sure none of the wires have pulled off the top of the yoke.

pretty sure the sanwa is the exception on this,had one last week with open circuit HOT displaying horizontal collapse

first chassis i have seen do this

jonnyturbo · Post by **jonnyturbo** » February 24th, 2013, 9:29 am

This is my old chassis, it was serviced a couple of months ago. Could this be something that was damaged in transit?

Post by **grantspain** » February 24th, 2013, 11:08 am

jonnyturbo wrote:This is my old chassis, it was serviced a couple of months ago. Could this be something that was damaged in transit?

could be shipping damage,quite common
both chassis are coming to me,if its one i have looked at recently then it will be under warranty anyway

Porl · Post by **Porl** » May 5th, 2014, 5:18 pm

I'm having a very similar problem with my Naomi Sanwa chassis. I was adjusting the H hold and it went to single vertical line and won't adjust out or anything now. Was it the transistor have blown? Is it worth taking the chassis out to check solder joints etc?

Cheers

Porl

Sanwa 29e31s chassis problem

Sanwa 29e31s chassis problem

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