Electronics Repair

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Ramsey CT-90 Freq counter

I'm trying to repair a CT-90 frequency counter and in need of a schematic. Any help would be greatly appreciated. Thanks...
0 comments posted 17yrs
posted by revellm
0 comments posted 17yrs posted by revellm

Building a isolation transformer...

Hi, I've got an old tripplite power conditioner box and while it may be an isolation transformer of some sort, I am not...
0 comments posted 17yrs
posted by nospam38925
0 comments posted 17yrs posted by nospam38925

Straightening tube/valve pins

In this case someone has been moving all 12AX7 type tubes around and forcing them in or something. Anyway pins are bent...
45 comments posted 17yrs
posted by diverse
45 comments posted 17yrs posted by diverse

ChannelPlus DA-5500HHR part ID.

This ChannelPlus DA-5500HHR has 15V dc coming in from an external supply and then it stops at some unidentifiable part....
0 comments posted 17yrs
posted by farberbear.unspam
0 comments posted 17yrs posted by farberbear.unspam

Sherwood S-8300Cp receiver help

I have posted a copy of the schematic at http://www.kcswug.com/images/\\Sherwood S-8300Cp receiver schematic.pdf for an...
0 comments posted 17yrs
posted by wayneRMVJNKtiffany
0 comments posted 17yrs posted by wayneRMVJNKtiffany

Does anyone have one .. RGB-CV10

Does anyone have one. I've had no luck locating one. -Ron
0 comments posted 17yrs
posted by rcoonjr
0 comments posted 17yrs posted by rcoonjr

Toshiba 32AV502U

Looking for service manual & or schematic for this model in any form. Thanks
0 comments posted 17yrs
posted by Ronbo
0 comments posted 17yrs posted by Ronbo

Need help with Toshiba CF32E50 TV

I'm having trouble with a television whose image is displaying wider than the screen is. It's so bad as to cause menu's...
0 comments posted 17yrs
posted by chucklberry
0 comments posted 17yrs posted by chucklberry

Strange focus error on Oscilloscope Hameg HM1005

Hi, I'm currently having trouble with my good-ol' HM1005. It has some problems focusing correctly. When it's cold, you...
18 comments posted 17yrs
posted by Preamp
18 comments posted 17yrs posted by Preamp

Adding missing SATA connectors to motherboard

I have some motherboards designed for 4-6 SATA ports, but only 2 SATA connectors were installed, and I'd like to add th...
93 comments posted 17yrs
posted by larrymoencurly
93 comments posted 17yrs posted by larrymoencurly

CRT monitor: flashes on screen and burnt smell

Recently, my Hyundai ImageQuest Q910 19" monitor has been acting up. Occasionally, there would be flashes across the sc...
6 comments posted 17yrs
posted by cheney
6 comments posted 17yrs posted by cheney

Toshiba model 46H84, CH. TAC472 stuck in captions mode

You cannot turn captions off with the remote through the menu on this set. Customer said that it happened all of a sudd...
0 comments posted 17yrs
posted by captainvideo462002
0 comments posted 17yrs posted by captainvideo462002

HP HEDS-7502 data anyone?

Does anyone have a datasheet/appnotes on Hewlett-Packard HEDS-7502 rotary optical encoders? Google search did not retur...
4 comments posted 17yrs
posted by ksi
4 comments posted 17yrs posted by ksi