Hi Sealfunfly! found D36 - Diode 1N5819 with short circuit, A4 - OP AMP LMC6081 with short circuit between +V and -V, U4 - Shift Register 74HC959 with a low impedence between GND and +5V supply. So, now I'm in wait to receive new IC's from my supplier. I'll let you know. Many thanks. Regards
Hi Sealfunfly! Have you the electrical schematics of these instrument? My instrument don't power on, always yellow light on. I try to supply the 7.2V of battery with an external power supply (battery disconnected) but still don't start. It seems that the charger work well, after charging 8.16V are present on the batttery, but not switch on. I can not reach schematics any where ...Have you some help for me? Many thanks. Regards
Hi. I no electrical schematics for this and can repair it some damged. but i can reccoment for you about problem can't power on Please try to remove some opamp IC around signal connector point (ESD plat) and power on you machine again. or tuch by you hand on opamp IC if so have hot temp somuch please try to remove it and try power on again . i found this case damage from OPAMP IC
Hi Sealfunfly! found D36 - Diode 1N5819 with short circuit, A4 - OP AMP LMC6081 with short circuit between +V and -V, U4 - Shift Register 74HC959 with a low impedence between GND and +5V supply. So, now I'm in wait to receive new IC's from my supplier. I'll let you know. Many thanks. Regards
Wow very good.
Hi Sealfunfly! Have you the electrical schematics of these instrument? My instrument don't power on, always yellow light on. I try to supply the 7.2V of battery with an external power supply (battery disconnected) but still don't start. It seems that the charger work well, after charging 8.16V are present on the batttery, but not switch on. I can not reach schematics any where ...Have you some help for me? Many thanks. Regards
Hi. I no electrical schematics for this and can repair it some damged. but i can reccoment for you about problem can't power on Please try to remove some opamp IC around signal connector point (ESD plat) and power on you machine again. or tuch by you hand on opamp IC if so have hot temp somuch please try to remove it and try power on again . i found this case damage from OPAMP IC
Please see point of OPAMP damged
www.picz.in.th/image/aGWxRS