Go Back   Home > Forums > > > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Toshiba TDP-B3 How to fake lamp signal(s)
Toshiba TDP-B3 How to fake lamp signal(s)
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 21st January 2011, 09:05 PM   #1
Technokiddy is offline Technokiddy
diyAudio Member
Join Date: Jan 2011
Question Toshiba TDP-B3 How to fake lamp signal(s)

Hey everyone,

Im completely new to this forum so first a short intro:

I am Rogier from the Netherlands, 21 years old and studying IT.

So here we go, a few days ago I have become the new owner of a Toshiba TDP-B3 DLP Beamer. The lamp in this beamer has died and I want to replace it with an alternative light source.

I have a quite good knowledge about electronics, although im stuck now:

On the UHP Driverboard I bridged the optocoupler that is used for the Lamp-start signal (I assume). The result from this is that the beamer attempts to start the lamp only once instead of running in a "start" cycle.

When O shine a light in the hole where the old UHP bulb was located and I look through the lens I can see the light. It is dim but it's there. Now the weird problem is that the beamer wont show any images on the display itself. It just stays blank.

I think the beamer needs more then only that 1 signal for the bulb. The beamer has the same UHP driver as an InFocus P335 as far as I could find. The main power board has 2 connections going to the driverboard, 1 is power and the other one is a 4 wire (feedback?) line from the driverboard, this is also the line where the optocoupler is connected on.

A third connection is larger then the previous 2, it consists of a 3x5 grid that you can plug on the mainboard.

I have been searching all over the web for a solution for this beamer. But I just cant find any schematics/service manuals for it explaining the pinouts from the main power board.

Once I got this information I might be able to actually start the beamer entirely and see an image.

Is there anyone out there who has the same beamer as I do, or who knows where to find or how to get the beamer up and running without the original lightbulb?

Thanks in advance!
  Reply With Quote


Toshiba TDP-B3 How to fake lamp signal(s)Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Possible fake Toshiba/Sanken transistors? SSassen Solid State 39 9th February 2015 01:44 AM
Need Quiet Fan: For Toshiba Projector TDP-S20 NYCMachine Forum Problems 0 13th April 2010 11:51 AM

New To Site? Need Help?

All times are GMT. The time now is 07:49 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio