problem about GC/MS: baseline too low

[gcmasse413]

We have a problem about GC/MS(VARIAN). Five days ago, we cleaned the ion volume of the MS part. But after that, we have no signal. Then we follow the advice of VARIAN's technic service and replace the detector and the electronic card of the detector. But the problem remains. Every time we start the software the system warns that the baseline is too low! We examine all the parts of the GC-MS. there is no leaks. All the parts are connected well. We failed to solve it. Have you anyone the same problem? or an idea? thanks a lot.

[gcmasse413]

We have a problem about GC/MS(VARIAN). Five days ago, we cleaned the ion volume of the MS part. But after that, we have no signal. Then we follow the advice of VARIAN's technic service and replace the detector and the electronic card of the detector. But the problem remains. Every time we start the software the system warns that the baseline is too low! We examine all the parts of the GC-MS. there is no leaks. All the parts are connected well. We failed to solve it. Have you anyone the same problem? or an idea? thanks a lot.

Ther isn't anyone who can help me? if someone knows it, please tell me, thank you.

[HbJ]

Please tell us the exact model of your instrument.

[Peter Apps]

We have a problem about GC/MS(VARIAN). Five days ago, we cleaned the ion volume of the MS part. But after that, we have no signal. Then we follow the advice of VARIAN's technic service and replace the detector and the electronic card of the detector. But the problem remains. Every time we start the software the system warns that the baseline is too low! We examine all the parts of the GC-MS. there is no leaks. All the parts are connected well. We failed to solve it. Have you anyone the same problem? or an idea? thanks a lot.

Ther isn't anyone who can help me? if someone knows it, please tell me, thank you.

You post your question at 11:32 and 8 minutes later you are expecting an answer !! If you want that kind of speedy response try paying a service engineer to do it.

Peter

[gcmasse413]

We have a problem about GC/MS(VARIAN). Five days ago, we cleaned the ion volume of the MS part. But after that, we have no signal. Then we follow the advice of VARIAN's technic service and replace the detector and the electronic card of the detector. But the problem remains. Every time we start the software the system warns that the baseline is too low! We examine all the parts of the GC-MS. there is no leaks. All the parts are connected well. We failed to solve it. Have you anyone the same problem? or an idea? thanks a lot.

Ther isn't anyone who can help me? if someone knows it, please tell me, thank you.

You post your question at 11:32 and 8 minutes later you are expecting an answer !! If you want that kind of speedy response try paying a service engineer to do it.

Peter

I'm sorry. But I am in terrible trouble about it. So... Please forgive me, Peter. And if you have an idea, please help me. Thanks

[gcmasse413]

Please tell us the exact model of your instrument.

Thanks a lot for your help.
Because of the problem 'baseline is too low', I isolate the model Mass and set all the parameters correctly. But the software warns that the baseline is too low.
1200 GC/MS
After the diagnostics electronics, all those harewares are well conneted. and no leaks.