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MaxPRO3+ problems....

 
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MaxPRO3+ problems....
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dilis
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Joined: 14 Jul 2006
Posts: 13

Post MaxPRO3+ problems.... Reply with quote
Just yesterday i receive a new GroundPlane Antena and 25m of the expensive AircomPlus cable.

The first problem appear at the beginning, the MaxPRO3+ can't set above 103Mhz, if i select above the red LED stay on. The antena is well tune-up with low S.W.R on my powermetre and the MaxPRO3+ is setup for about 1W RF out just for testing.

After all i tune the transmiter to 100Mhz 1W output and 1.2:1 S.W.R but the output transistor get very hot after seconds and activate the protection red Led. The power supply is 15v measured and the aluminium heating stick well mount with thermal-past to the case. How is that happened with such low S.W.R?

I check the temp of all the Transistors and IC and i detect that the 5v regulator IC2 is going in very hight levels, can't touch 5 sec. I think this is not normal.
Wed Aug 02, 2006 12:49 am View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
Email me directly and attach a good photo of the board.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Fri Aug 04, 2006 1:00 am View user's profile Send private message Visit poster's website
dilis
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Joined: 14 Jul 2006
Posts: 13

Post Reply with quote
Please explane what is the problem.
I have to radiocast as fast as posible.
I have cancel my radiocast many times because of problems.
You sell products without to be tested or what?
Fri Aug 11, 2006 11:02 am View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
It is impossible to determine from your description what is wrong. I have asked
you to email me a photo, but you provided a very fuzzy image, probably taken
with a webcam or a phone. Sometimes its just something silly and a photo shows
it quickly. If your Power supply drops voltage significantly under load, that could
be the problem as well.

Hot regulator is normal, these are spec'd up to 75 deg C, and its far far away
from that temperature. This regulator has never failed in any unit and many were
sold.

For the output transistor we recommend a small fan blowing across the board.
Did you read the instructions? If you have problems assembling the unit for use
next time consider a boxed unit where we wire everything for you.

Because of everything written above you need to send the unit back to us for
a checkout so that we may determine whether this is the problem of the unit or
something else.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Fri Aug 11, 2006 11:17 am View user's profile Send private message Visit poster's website
pcs
Site master
Site master


Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
PS1: We will continue this discussion when the unit comes here for service. If this is anything that is of general
use to the community we will publish results/tips here.

PS2: Posting links to related websites not allowed, any such posts will be deleted.

PS3: Regulator temperature is not 75C, maybe 50-60% of that which is perfectly ok. The regulator is designed
to handle 75C without damage and will not fail at only 50% of the maximum limit. Even if heated above 75C it
contains over-temperature protection so please let's stop discussion on this ridiculous issue.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Tue Aug 22, 2006 7:04 pm View user's profile Send private message Visit poster's website
dilis
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New registered user


Joined: 14 Jul 2006
Posts: 13

Post Reply with quote
OK

Sorry for the related website link, not gone happened again

OK i'm stoping pointing the regulator temperature since you guaranty that is normal.

Let me know when the unit arrives and checked,
i have sent it at 14/8/2006.

With all respect dilis.
Wed Aug 23, 2006 3:21 am View user's profile Send private message
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