Lodestar 8202 TEARDOWN from buy9.99 aka plcsmart.com - Page 1
Forum section: electronics / general

author: T4P
author_rank: Super Contributor
timestamp: July 05, 2012, 04:13:13 am
content: Yes, really. It was on the other side of my island but it only took me 1 hour on public transport anywayI don't know if you can tell or not but it's pretty LARGE ... but it's DVM can be used as a "sense" line, neat.TEARDOWN INCOMING(This PSU used to be sitting at some big company, i heard, but it had no more use for not sure what but it's a subdivision of wearnes, a big grouphttp://www.oconnors.wearnes.com/)Really big transformers ... i have never seen anything that huge before at least in my lifeSlave channel is basically a clone of the master channel ...*5V has a blown fuse ... no idea what sort of fuse, just requested a schematic from lodestar

author: digsys
author_rank: Unknown
timestamp: August 20, 2012, 02:05:32 pm
content: Quote from: T4P on July 05, 2012, 04:13:13 amHiya, couldn't see how to add photos in PM, so replying here. These are the mods I did -Added a 12V Fan internally. Not strictly correct, but it moves a lot of air around, much of whichblows outside. Temperature tests showed dramatic reduction in heat, so I was happy enough.The regulators for the displays we WAY over-temp, so I added V-dropping resistors andheatsink tabs. Did the job well also.

author: T4P
author_rank: Super Contributor
timestamp: August 20, 2012, 06:17:05 pm
content: Well now i see the heatsink orientation difference, thanks digsys!Going to hack my unit some other time and to fix that broken 5V supply ( Not my fault! I only got it at 88 us dollarsbecause the 5v line is shot and the fuse for the transformer to 5v is shot too ) and yeah,time to install some small heatsinks to the regulatorsOnly 2 small tiny heatsinks ( One faces the front with it's fins and i just found a clip on heatsink PLUS i have some heatsink clips thanks to RS's braindead labelling, they called it a heatsink but actually it was a clip and the damn RMA agents still haven't replied since what seems like 6-7 months ago)

author: T4P
author_rank: Super Contributor
timestamp: October 13, 2012, 03:11:49 am
content: Hey digsys, a little update from me.My 8202 has given up the ghost ... the slave channel is in constant OCP no matter how i adjust

author: EEVblog
author_rank: Unknown
timestamp: October 13, 2012, 03:29:04 am
content: Ah, so that's the infamous buy9.99 ebay dealer!Dave.

author: digsys
author_rank: Unknown
timestamp: October 13, 2012, 01:00:58 pm
content: Quote from: T4PAre you going to try to fix it? Usual suspects are connectors or anything that gets too hot. Maybe check the Potentiometers?If you want me to take readings at various settings, let me know.

author: T4P
author_rank: Super Contributor
timestamp: October 17, 2012, 07:03:02 pm
content: I guess i'll replace the caps next time, might have accidentally done them inOh yeah, no wonder i saw black spots on my screwdriver and heard a loud bang

author: all_repair
author_rank: Frequent Contributor
timestamp: August 05, 2013, 03:41:09 pm
content: >Ah, so that's the infamous buy9.99 ebay dealer!Bought once, and you know the quality of my "as it" purchase.

author: nctnico
author_rank: Super Contributor
timestamp: August 08, 2013, 08:45:39 pm
content: Quote from: all_repair on August 05, 2013, 03:41:09 pmYou just need to arm wrestle him for a good deal. Sometimes he wants more for less appealing articles...

author: all_repair
author_rank: Frequent Contributor
timestamp: August 12, 2013, 12:45:47 pm
content: Is like buying share that your broker himself is selling to you. The chance of the "as it"" that can be fixed is very very slim. Lucky for me, I do not have to pay the shipping fee as I am located in Singapore also. There is a new competitor coming up, I bought a used Hako desoldering iron,but sold as good, not as "as it", turn up my fish tank air pump has a stronger power. But I got my money back for the iron. The seller is like 9.99 are from south asia, and iron seller said he would be sending to Parkinstan for sale for the rejected reject.