Friday, April 27, 2012

LG 32LB4D / 32LC5DC-UA / 32LC7D does not turn on - power board EAY33058501/13 repair procedure

A major motel chain recently sent us a bunch of power boards EAY33058501/13 coming out of LG 32LB4D, LG 32LC5DC-UA or LG 32LC7D LCD TV models.

They had all worked in climate controlled indoor rooms and all had the same or similar issues - standby light coming on, but TV refunding to completely turn on or turning on for a short while or turning itself off shortly after coming on; sometimes the TV may come on, but without an image.

All power boards had the same set of capacitors visibly swollen at the top.

Below is the picture of the board:

The bad capacitors were C221, C222, C223, C232 (located below the upper right heat sink saying CTVR 32'' on the picture), also C203 in the same group, and C207 and C204, C205 located under the lower right heat sink.

When replacing the capacitors make sure to use same or better values for them, specifically same or better temperature rating and same or higher voltage!

Generic electrolytic capacitors found at RadioShack retail stores are usually of lower quality than the ones you need and I recommend against using them yet when nothing else is available they can be used as a temporary patch.

If you want the set of capacitors you can order it directly from here:

I've seen this power board also have other issues.
At least twice I've seen it being completely dead, usually as a result of a power surge that causes damage in a power component on the primary side, usually leading to a blown main fuse (next to the power plug). 

I can remember at least one case where the two power FETs Q150 and Q151 were blown and had to be replaced, possibly along with some smaller components around them too.

And there was at least another case where the +5V standby voltage would come on and the TV would respond to turn on command, but will shut itself off as a result of overvoltage in the mail power lines.

You should test the voltages that the board produces when it is activated. It is not hard to do.

The connectors with power outputs for the main board are at the lower right corner of the board and look like this (click to enlarge):

You can see where the constant +5V standby output voltage is and right next to it is the pin that is used to tell the power board to turn on all other voltages, well, except a specific 3.4V output that is regulated separately.

To test the power board you can put it on a bench and manually short the POWER_ON and the +5V SB pins.

You can then measure the rest of the voltages as printed on the board, right by the connectors, including the 24V output at the P204 and P205 connectors not shown on this picture.

Note there are some control pins that do not produce output voltages; for example on P204 there are  4 pins at the right side labeled BRI, I-C, DIM and ERR. 

The same can be found on P201 and in fact the power board is simply being used to bridge the signal from one connector to the other.

Normally the output voltages are slightly *above* the declared values: 19V is 19.7V, 6V is 6.5V to 7V and 24V is closer to 25V.

This is OK as long as they are stable and within 5% to 10% of what's printed on the board.

When they are missing or significantly off or when the primary fuse is blown as mentioned above then the board has a more serious failure and needs to be serviced or replaced.

If interested in a repair service do not hesitate to contact us!

Sunday, April 8, 2012

How to import eBay / PayPal transactions in QuickBooks for free - part 1

Preface – please read all of it!
This article is for eBay sellers and everyone else using PayPal to receive payments for goods they sell and want to have those transactions imported into QuickBooks.
I assume some level of technical knowledge such as basic Excel and Access operations, PayPal navigation, ability to download files in different formats etc.
The information and files here are offered for free , but without any warranties other than that they were never designed to cause harm, harvest data etc. illegal activity.
Still, use everything below at your own risk and backup your files before you start experimenting!
Please realize that while I offer this at no cost I can not afford to support it at no cost!
If you have any questions or requests please use the Coppell TV Repair’s donations form to donate anywhere between $10 and $20 before submitting a question or I will simply ignore the request.
At the end of the preface , here’s a link to the files for download…but I honestly warn you it’ll be better if you read through the rest first:

Why was the PayPal-To-QuickBooks converter created?
I am an eBay seller receiving payments for goods and services via PayPal.
Sometimes I also make direct sales – again of either products or services – outside of eBay, but still receive payments through PayPal. (for the record, it’s not because I’m in love with PayPal; it’s because I prefer that everything related to one business is done in one place.)
For every payment I receive I use either eBay or PayPal to print a shipping label.
I also make purchases paying out of the PayPal account to various sellers.
It’s actually pretty straightforward – receiving money for sales, printing shipping labels, spending money on purchases and, I forgot, once a month transferring the money to a bank account so that I don’t lose too much should PayPal decide to kill me as some online rumors accuse it of doing.
And I want all those transactions to go into my QuickBooks accounting database for the company , which already holds the banking, credit card, salary etc. company accounting.
This would make my accountant happy to a point of not scalping me a few thousand dollars for having to do it by herself.

The problem
There are actually two problems with getting PayPal transactions into QuickBooks.
The first is the fact that PayPal records its transactions in a very weird, at least to me, manner. I suppose it makes great sense from their perspective and if I devote enough of my time to reverse engineer it (or , if that fails, RTFM) I could parse it and produce excellent QB file, but after looking it for 20 or so minutes I figured I better try another approach.
I know there is an app on the market that does it, but I didn’t want to both spend more money and then tie myself to yet another application. I wanted something simple, effective and below $20.
If you’re curious about PayPal’s data format just download a piece of history from your account’s transactions , then try to make sense of all those initiated, pending, open, partially refunded, temporarily held, reversed, cancelled etc. records they have.
Happily enough, they offer a download formatted “for QuickBooks” and if all you care is the amount of sales and expenses then it may actually work for you…for the most part.
On a side note I’ll also add that the transactions that PayPal returned to me in this way did not match the actual account performance, i.e. they are simplified, optimized and (I dare say) incorrect version of the complete transaction history offered by PayPal , the one that is so hard to process.
I only found that out later, of course, but I was expecting it and it was within reasonable margins. I definitely hope they improve it in the future at least in regards to accuracy.
The second problem is that the PayPal QuickBooks format, even if accurate, could not possibly fit nicely into QuickBooks unless your accounting needs are down to knowing how much was sold, how much was bought and at which dates.
If that’s all you want then you can stop reading here and just move on to downloading your history from PayPal in QuickBooks format and playing with it.
However, if you want certain frequent expenses such as subscriptions ending up in a “Subscriptions:Web Tracking” account in QuickBooks, or if you want to separate shipping label expenses from others, or if yo you want, like we wanted, to separate sales of services and products, or maybe separate certain groups of products from others, then you’re out of luck with the direct PayPal generated file for QuickBooks.
At the very best you’ll have to manually go through all transactions and reclassify them.
So, the second problem is the one of mapping of the transaction exported by PayPal.
At least I call it mapping; my account would call it “reclassifying” and you can call it whatever else you want. It is the problem of automatically assigning proper accounts, names and eventually descriptions to the transactions to be exported to QuickBooks so that you don’t have to manually change them one by one there.
For example, a simple eBay sales transaction is recorded this way in the PayPal’s QuickBooks output data file:
eBay Payment Received
YPPD-J017C YPPD-J018C YPPD-J018E 4921QP1050B

Other Income

Other Expenses

In QuickBooks, this will add one record to the account called “PayPal”, one to “Other Income” and one to “Other expense”.
What this transaction actually does is reflect a sale of something (what exactly will become clear later) for a total of $32.9, automatic withdrawal of $1.25 (for postage printed through PayPal) and resulting deposit of $31.65 in the PayPal account.
Well the mapping problem here is that I’d like the postage properly accounted for in a “Postage and delivery” account in QuickBooks and I want the income to not be “Other Income”, but “Product sales” or “Services sales” depending on what was sold.
And I do not want to correct that for all transactions I have.
I want a process that maps a transaction from the generic PayPal form to accounts and names used in my QuickBooks company.
If that’s what you want this article is for you.
Getting started
As mentioned above the problem of importing PayPal sales data into QuickBooks has two components and therefore you start by addressing the two of them: download data from PayPal and then creating maps that will define the translation of the generic PayPal transactions to customized accounts and names for your own QuickBooks company.
Before I walk you through those two steps, though, I’ll take a moment and talk for a second about the data processing being used.
Application requirements
I happened to have a copy of MS Office 2007 installed on the machine I was working on so this is the tool of choice for the task.
This includes Excel 2007 and Access 2007 and the downloadable solution includes two files – an Excel spreadsheet and a relational database in the specific format.
If you have an earlier Office version and the download doesn’t already include files for it then you’ll have to either take up on the challenge and convert them yourself or refer to the sixth paragraph of this article.

Downloading the data files
To download the files you’ll want to log-in to your PayPal account and download two separate files for the same period: the QuickBooks data file and the balance-affecting transactions file as shown on the below pictures.

The reason you’re downloading two and not one file is that for some reason the Quickbooks file does not usually include information on what a purchase or sale was for, at least as of beginning of 2012.
PayPal may start including this information in the future , but at least at the time being the easiest way to get it is from the historical transaction file.
At least in my case , perhaps because I was downloading data for a whole year at once, PayPal did not directly return the file, but told me that it’s being prepared and sent me an email within 24 hours advising me it is ready for download.
I will not walk you through this part and assume you’ve already successfully downloaded AllData.txt (TAB delimited, balance affecting) and AllData.iif (Quickbooks format).

(to be continued)