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YIHUA-937D Repair
#27
Proradila YIHUA....trafo jedva da se pozna da se ugrijao...stavio na 400C i fino to grije...mjerio sam AC napon na toroidu...kada je ukljucena lemna stanica bez spojene lemilice ac napon je 29,08VAC a kada priključim lemilicu i bilo koju god da temperaturu stavik (probao hladnu lemilicu sa 200C na 480C tj MAX temp) i AC napon je stalno 25,34VAC do 25,44VAC....a trafo kada sve iskljucim sa napajanja na dodir tek toliko da se osjeti da je topao... problem je bio sljedeci:

- otisao mi je AC kabel prije (dakle nije bilo do kineskog trafoa)
- spajanjem AC izvoda 24VAC i 12VAC je malo drugacije tu sam napravio glupost prije dok nisam pratio veze na PCB-u..dakle jedan kraj 24VAC je spojeni preko veze na PCB-u direkt na 12VAC tako da jedan 12VAC mora da je otpojeni da bi sve radilo jer je inace u kratkom spoju i 12VAC se veze direkt na 24VAC i vraca se napon u toroid i zato se toroid za par sekundi prije ugrijao ko lud....my mistake...

Sada sam spojio 24VAC obje zice direkt na trijak a sredinu izvoda dakle samo jedan 12VAC sa toroida sam vukao na elektorniku da dobijem 12VAC i sada to radi ko sat.

Zahvaljujem svima na pomoci. Bit ce kasnije slike da se vidi da sve radi...
SAMO-BANOVAN OD 01.11.2024
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Messages In This Thread
YIHUA-937D Repair - by ronovar - 03-24-2018, 10:43 AM
RE: YIHUA-937D Repair - by deksi - 03-24-2018, 10:55 AM
RE: YIHUA-937D Repair - by Milan94 - 03-24-2018, 10:58 AM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 11:17 AM
RE: YIHUA-937D Repair - by Dragan83 - 03-24-2018, 11:27 AM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 11:43 AM
RE: YIHUA-937D Repair - by Milan94 - 03-24-2018, 11:52 AM
RE: YIHUA-937D Repair - by Milan94 - 03-24-2018, 11:33 AM
RE: YIHUA-937D Repair - by TDA - 03-24-2018, 12:02 PM
RE: YIHUA-937D Repair - by Dragan83 - 03-24-2018, 12:06 PM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 12:09 PM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 12:42 PM
RE: YIHUA-937D Repair - by Khadgar2007 - 03-24-2018, 12:56 PM
RE: YIHUA-937D Repair - by ronovar - 03-24-2018, 01:02 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 12:21 PM
RE: YIHUA-937D Repair - by nik - 03-25-2018, 12:59 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 01:06 PM
RE: YIHUA-937D Repair - by nik - 03-25-2018, 01:20 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 02:50 PM
RE: YIHUA-937D Repair - by euronymous - 03-25-2018, 03:09 PM
RE: YIHUA-937D Repair - by ronovar - 03-25-2018, 04:42 PM
RE: YIHUA-937D Repair - by ronovar - 03-26-2018, 06:41 PM
RE: YIHUA-937D Repair - by Dragan83 - 03-26-2018, 07:40 PM
RE: YIHUA-937D Repair - by ronovar - 03-26-2018, 07:52 PM
RE: YIHUA-937D Repair - by euronymous - 03-26-2018, 08:43 PM
RE: YIHUA-937D Repair - by euronymous - 03-26-2018, 08:44 PM
RE: YIHUA-937D Repair - by ronovar - 03-27-2018, 10:00 AM
RE: YIHUA-937D Repair - by euronymous - 03-27-2018, 11:14 AM
RE: YIHUA-937D Repair - by ronovar - 03-27-2018, 02:09 PM

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