Search found 14 matches

by nunoit
Fri May 12, 2017 1:09 am
Forum: DSO Shell
Topic: D2 Diode Replacement
Replies: 7
Views: 6859

Re: D2 Diode Replacement

i looked at the d2 on my board which was marked as a7 then i crossed reference with the schematic saying it was a 1n4007 then looked up smd package and came up with the outline of sod123fl but what i don't understand that is if the schematic said it was a 1n4007 you would get some different even if ...
by nunoit
Wed May 10, 2017 12:16 pm
Forum: DSO Shell
Topic: D2 Diode Replacement
Replies: 7
Views: 6859

Re: D2 Diode Replacement

no my id is A7 and i looked it up on smd chart to come op with the info i posted. btw there are more than 1 A7 listed, that's the only one that matched description explained in schematic. device body style is SOD123FL. T7 only comes up as transistors not diodes with charts.
by nunoit
Wed May 10, 2017 12:17 am
Forum: DSO Shell
Topic: D2 Diode Replacement
Replies: 7
Views: 6859

Re: D2 Diode Replacement

here A7 SM4007PL MCC I SOD123FL 1000V 1A rect 1N4007
by nunoit
Mon May 08, 2017 11:48 pm
Forum: DSO Shell
Topic: D2 Diode Replacement
Replies: 7
Views: 6859

Re: D2 Diode Replacement

schematic shows the d2 is a 1n4007
heres schematic http://www.jyetech.com/Products/LcdScop ... _Shell.pdf
by nunoit
Mon May 08, 2017 11:42 pm
Forum: DSO Shell
Topic: analog board
Replies: 2
Views: 3205

Re: analog board

thanks for your response. i found the error of mine it was in the resistor divider stage between resistors 7 to 12. one resistor was not soldered to board.
by nunoit
Mon May 08, 2017 12:21 am
Forum: DSO Shell
Topic: analog board
Replies: 2
Views: 3205

analog board

analog board not switching between tlo82 a and b. can only calibrate 3.3v side (tlo82b). might be the tlo82 or the 74hc4053. i don't have the tools to remove the old chips. any one else have this problem.
by nunoit
Sat May 06, 2017 9:04 pm
Forum: DSO Shell
Topic: [SOLVED] Cant flash firmware
Replies: 22
Views: 18657

Re: [SOLVED] Cant flash firmware

i guess i must have a good luck i upgraded from 054 to the new 055 with out any trouble at all. sorry if you had problems my $2.37 investment worked great
by nunoit
Fri May 05, 2017 11:58 pm
Forum: DSO Shell
Topic: [SOLVED] Cant flash firmware
Replies: 22
Views: 18657

Re: [SOLVED] Cant flash firmware

just arrived and i tested with loader it shows as com 3 i will try firmware upgrade this weekend
by nunoit
Tue Apr 11, 2017 12:41 pm
Forum: DSO Shell
Topic: [SOLVED] Cant flash firmware
Replies: 22
Views: 18657

Re: [SOLVED] Cant flash firmware

qu1ck wrote:
nunoit wrote:well maybe ill have better luck than others have
It's a dice roll, I imagine. Mine (exactly like pictured) works, others linked above modules that didn't.
that's one reason i ordered, i read your post.