jovy re-7500 problem with lap top motherboard - GSM-Forum

borjan_vujic2 · 03-02-2013, 12:55

hello all
i have jovy re-7500 and problem with siemens, asus motherboard ...
on 150c motherboard is bent, i use pcb support motherboard from jovy but not good solution !!

how to fix this problem ?

.::EXTREME::. · 03-02-2013, 13:04

READ MORE AS EXAMPLE..

http://forum.gsmhosting.com/vbb/f404...9/#post4704182

borjan_vujic2 · 03-02-2013, 13:22

I read it long ago ....If there is a topic that is related to my problem I ask that you give me a link where it is written!
best Regards

Dan Collins · 03-04-2013, 18:02

The warpage is caused by direct heating to one location where other places on the board are not heated. The RE7500 lower heaters are not large enough to heat entire board. RE8500 has sufficient size and with lower power on upper heater the warpage should not happen. On boards where this is an issue there should be extra preheat time.

underbird_gsm · 07-19-2013, 07:25

Hey Borjan , do BT Heater preheat in fast reflow up to 145c 150c then reflow position , this is just BT Heater , then do Fast reflow UPHeater until the temperature rise to 225-230 leadfree , 185-195 leaded.... no Bend

03-02-2013, 12:55	#1 (permalink)
borjan_vujic2 Freak Poster Join Date: Feb 2006 Location: BiH Age: 37 Posts: 248 Member: 236764 Status: Offline Thanks Meter: 12	jovy re-7500 problem with lap top motherboard hello all i have jovy re-7500 and problem with siemens, asus motherboard ... on 150c motherboard is bent, i use pcb support motherboard from jovy but not good solution !! how to fix this problem ?

03-02-2013, 13:04	#2 (permalink)
.::EXTREME::. No Life Poster Join Date: Jul 2011 Location: ۞_ KERALA__۞_INDIA Posts: 3,352 Member: 1619462 Status: Offline Sonork: 100.1606509 Thanks Meter: 1,517	READ MORE AS EXAMPLE.. http://forum.gsmhosting.com/vbb/f404...9/#post4704182

03-02-2013, 13:22	#3 (permalink)
borjan_vujic2 Freak Poster Join Date: Feb 2006 Location: BiH Age: 37 Posts: 248 Member: 236764 Status: Offline Thanks Meter: 12	I read it long ago ....If there is a topic that is related to my problem I ask that you give me a link where it is written! best Regards

03-04-2013, 18:02	#4 (permalink)
Dan Collins Freak Poster Join Date: Jan 2007 Posts: 210 Member: 437621 Status: Offline Thanks Meter: 19	The warpage is caused by direct heating to one location where other places on the board are not heated. The RE7500 lower heaters are not large enough to heat entire board. RE8500 has sufficient size and with lower power on upper heater the warpage should not happen. On boards where this is an issue there should be extra preheat time.

07-19-2013, 07:25	#5 (permalink)
underbird_gsm Freak Poster Join Date: Apr 2004 Location: romania Posts: 211 Member: 63457 Status: Offline Thanks Meter: 26	Hey Borjan , do BT Heater preheat in fast reflow up to 145c 150c then reflow position , this is just BT Heater , then do Fast reflow UPHeater until the temperature rise to 225-230 leadfree , 185-195 leaded.... no Bend