UPDATE 3-Samsung sees strong Q2 earnings, shares jump

* First ever earnings guidance from Samsung

* Q2 consol op profit seen up to 2.6 trln won, jump vs Q1

* Q2 sales seen at 31-33 trln won, up from year-ago and Q1

* Shares gain more than 4 percent in flat market

* All key businesses outperforming - analyst (Adds background, rivals, updates shares)

By Rhee So-eui and Marie-France Han

SEOUL, July 6 (Reuters) - South Korea's Samsung Electronics (005930.KS), the world's top maker of memory chips and flat screen TVs, forecast second-quarter earnings well above market estimates, driving its shares up more than 4 percent on Monday.

Technology companies around the world have seen their earnings and valuations hit by the global downturn, which has prompted consumers to cut back spending on electronics goods.

Analysts said the guidance reflected Samsung's strong market position and it was too soon to say the industry was on the mend.

"It looks like all key businesses -- semiconductors, LCD and mobile phones -- outperformed expectations," said Lee Min-hee, an analyst at Dongbu Securities.

"We've been expecting Samsung's earnings to show a V-shape recovery in the first half, and it looks like it's a much steeper recovery."

Samsung expects to post a consolidated operating profit for April-June of 2.2 trillion-2.6 trillion won ($1.74 billion-$2.05 billion) when it reports second-quarter earnings on July 24, it said in a filing to the Korea Exchange.

Samsung said it was the first time it had provided earnings guidance and was aimed at reducing confusion ahead of results, but it did not include a breakdown of divisional performance or other details.

"The guidance is very likely to translate into a parent-basis operating profit well above street forecasts of about 1 trillion won," said Dongbu's Lee.

Samsung Electronics, the largest share on the KOSPI and accounting for 10 percent of the main index's market cap, was up 4.2 percent at 626,000 won by 0243 GMT. It was the main factor behind the KOSPI's 0.1 percent rise, the only positive spot in a weaker Asian market.

Samsung stock rose as much as 4.7 percent at one point, its highest intraday percentage gain since early February.