Seals fine when seal button pushed but won't complete sealing cycle on vacuum and seal process.

Try making a seal with nothing liquid in bag, check seal on bag after. If seal looks good it could just be liquid getting on seal area causing it not to seal. There are tips online on how to help prevent this (example: placing rolled up paper towel sheet). If seal still looks bad than you may have a bad spot on the heat seal wire.

That could be a bad foam seal not completing suction, A piece of debris that got sucked into vacuum line and or in pump, or in some cases a crack in a elbow or pump housing.

Seal-a-Meal FSSMSL0160-000 Vacuum Sealer - Amazon.com

www.amazon.com > ... > Vacuum Sealers

Amazon.com, Inc.Handy indicator lights for "Hands-Free" and "Sealing", plus Open/Cancel button. Keep your busy kitchen running smoothly with help from this easy-to-use Seal-a-Meal ... With its sleek, straightforward design, the compact appliance effectively ... After completing the vacuum sealing cycle, both the motor and the "Sealing" ...Missing: red

Amazon.com: Rival Vacuum Sealer: Kitchen & Dining

www.amazon.com > ... > Vacuum Sealers

Amazon.com, Inc.
Rating: 3.6 - ‎233 reviews
Online Shopping for Kitchen Small Appliances from a great selection of ... Rival FSFGSL0150-015 3 Step Vacuum Sealer w/ Bag Starter Kit ... You push down....wait for Hands-Free light & Sealing light to go on....let go....wait for lights to turn off. ...After a couple of bags were done, I started having an issue in which the unit did ...Missing: red

Amazon.com: FoodSaver FSFRSH0051 FreshSaver ...

It's broken, it should heat up and seal.
Contact the manufacturer here: Sites food saver Site

Have you checked to see if the element is intact?

if not, http://www.elementsandmore.com/

Hi, it might be a problem with the sealing pump or something electric. If you are within the US or in Canada please contact us with your serial#: 1-888-956-6866 X: 234 OR X: 235. Eurodib

I guess your talking about a foodsaver. The noise is from the vacuum pump and is usually a little loud. You shouldn't need to keep your button pushed. Is it working when you just hit the vac/seal button and release? If your holding it the whole time, it may be starting another cycle.

I am having the same problem, it is like the heating element for the sealer is broken.My unit actually will NOT seal if I push the manual seal, but the vacuum works.

Does the vacuum seem to run forever and it doesn't seal?
Clean the black foam seals

Replace them if needed. they can be purchased from Tilia
WWW.FOODSAVER.COM