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New DeWalt 788 Rattling Noise ...normal or not?

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Forum topic by Vinnie posted 01-08-2014 03:18 AM 962 views 0 times favorited 15 replies Add to Favorites Watch
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Vinnie

100 posts in 2140 days


01-08-2014 03:18 AM

Topic tags/keywords: dw788 noise scroll saw

I just got a new DW788 and and my saw has a rattling sound sometimes at low speeds and high speed. After I cut something it will stop.As soon as I adjust the speed up or down it will start again. It sounds like it’s coming from the back. Should I send it back or is this normal with the new DW788?

Vinnie

-- Personalized name sign,custom name signs wood puzzles, home decor http://www.kerflinecrafts.etsy.com


15 replies so far

View DKV's profile

DKV

3194 posts in 1255 days


#1 posted 01-08-2014 04:08 AM

Vinnie, one of these may help.

-- Have fun and laugh alot. Life can end at any moment. You old guys out there know what I mean...

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Vinnie

100 posts in 2140 days


#2 posted 01-08-2014 04:24 AM

Thanks DKV. I did have that problem with my other 788 and found the fix at Rick’s site and it did work, though my saw was not on warrantee any more. The fact that this saw is new and if it does not work,..just wondering if they can tell I tried fixing it. Don’t want to void the warrantee. The rattling will start then stop sometimes on 3 and on 7 It’s annoying.

-- Personalized name sign,custom name signs wood puzzles, home decor http://www.kerflinecrafts.etsy.com

View sowood's profile

sowood

3 posts in 322 days


#3 posted 02-05-2014 11:22 PM

I’ve ordered first saw a week ago and just got replacement delivered…
Both rattle thoughout the range, noticably 3-4K, vibration seems excessive. Hard to identify, but would bet either back or lower arm. Dewalt told me to bring it to service located 50 miles away, no suggestions over the phone.

The second one is going back too, unless someone has some good insights.

As much as I like “yellow”, starting to look at alternatives.

View NormG's profile

NormG

4537 posts in 1755 days


#4 posted 02-05-2014 11:31 PM

Wow, at least there is a relatively easy fix, congrats on the saw

-- Norman

View Vinnie's profile

Vinnie

100 posts in 2140 days


#5 posted 02-06-2014 12:57 AM

sowood, I sent my saw back for a replacement and the one they replaced it with works very smooth no noise at all. What I think is happening with the DW788 ..for the most part is the tenisioning rod needs adjustment and the noise will go away. I have an older DW788 that I purchaced four years ago and I had to adjust the tenision rod to stop the rattling knocking sound.
I made that adjustment a year later after it was off warranty. I would send it back a third time. You shouldn’t have to make an adjustment like that right out of the box.

-- Personalized name sign,custom name signs wood puzzles, home decor http://www.kerflinecrafts.etsy.com

View sowood's profile

sowood

3 posts in 322 days


#6 posted 02-06-2014 01:28 AM

Thanks Vinnie, you’re right, that’s just doesn’t feel right. Printing label, third time lucky.

View Jim Finn's profile

Jim Finn

1745 posts in 1673 days


#7 posted 02-06-2014 01:47 PM

Yes, the rattling is normal for this machine and it is also fatal. But mine did last almost two years before I gave up repairing it and switched to a Hegner.

-- In God We Trust

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Vinnie

100 posts in 2140 days


#8 posted 02-06-2014 09:53 PM

Jim, If you don’t mind me asking, what repairs did you have to do to your DeWalt 788.

Vinnie

-- Personalized name sign,custom name signs wood puzzles, home decor http://www.kerflinecrafts.etsy.com

View sowood's profile

sowood

3 posts in 322 days


#9 posted 02-07-2014 08:47 PM

Third saw got delivered today and it’s another lemon. It has less rattling, but it vibrates way more.
Two previous had serials starting with 2013 31-... this one has 2013 29-...

Vinnie, would you mind sharing what’s the beginning of the serial on your working unit?

View BigFoot Products Canada's profile

BigFoot Products Canada

631 posts in 2144 days


#10 posted 02-07-2014 08:59 PM

The Dewalt DW788 used to be Manufactured in Canada and now it is made offshore..

I have the Canadian one and have never had any issues whatsoever with it.
It’s a GREAT Saw if it’s running correctly.!!!

We sell the BEST Lift Arm and Dust Collector System for this saw for easy blade changes
and controlling the dust.

BigFoot Products Canada

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BigFoot Products Canada

631 posts in 2144 days


#11 posted 02-07-2014 09:12 PM

Available at: BigFoot Products Canada

View Vinnie's profile

Vinnie

100 posts in 2140 days


#12 posted 02-07-2014 10:29 PM

So wood, my number is 2013 21. I will send you a video on what mine sounds like,
Don’t give up!
Vinnie

-- Personalized name sign,custom name signs wood puzzles, home decor http://www.kerflinecrafts.etsy.com

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Vinnie

100 posts in 2140 days


#13 posted 02-08-2014 01:54 AM

Here are two DeWalt 788 scroll saws purchased four years apart. I’m posting this video so people can compare the sound of they’re DeWalt 788 scroll saw . Both of mine run great no vibration.

-- Personalized name sign,custom name signs wood puzzles, home decor http://www.kerflinecrafts.etsy.com

View woodchuckerNJ's profile

woodchuckerNJ

897 posts in 385 days


#14 posted 02-08-2014 03:26 AM

I have one it’s about 10 years old maybe and makes no noise. Smooth as can be.

-- Jeff NJ

View Jim Finn's profile

Jim Finn

1745 posts in 1673 days


#15 posted 02-08-2014 11:23 PM

Vinnie: Other that replacing the switch and often cleaning it of dust I had the rattling so I opened up the saw and there were pieces laying about. I put it together and it fell apart a few times so I finally used locktite on the nut that does attach the motor to the linkages and sold it cheap. (It repeatedly fell off.) I now have two Hegners and a 1988 Jet. All working fine and parts available.

-- In God We Trust

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